Note: items here may have been sold or replaced. Please contact me directly if you have a specific request, this list and prices may or may not be accurate. Contact form is at the bottom of the page. Thank you.
I have acquired in time a number of calculators that I no longer need, most likely because I have others of the same type. From time to time it is necessary to give away some to make space for newer ones! This is my current list of calculators that I no longer need.
These are not junk (unless specifically described). All of them work well, again, with the exception of defects (if any) mentioned for each individually. Some might have been repaired, worn parts exchanged, old batteries replaced. If I am aware of a defect, I always describe it; certainly any defect clearly visible will be described. If it is not described, it means I am not aware of the defect. If you want more information, ask.
You may find “untested” items on eBay for a smaller price. Sometimes you may even be lucky and get a calculator that is truly untested but actually in good shape. Most of the time though on eBay “untested” means “I have tried everything me, my family, friends and grandmother could think of, and we could not make it work”. You want to buy “untested”? My suggestion is, buy if and only if the seller has a good return policy; otherwise, consider the item as “not working”.
Better / more images are available upon request.
If you do not see something that you would like, ask – it is likely I can be convinced to bundle it, if I can find the item that is. And if you don’t like the price, make an offer – you never know. This is a hobby, not a business, so making money is not necessarily my purpose here but in the end I might not always be willing to sell for a low ball offer.
All calculators will be shipped from Florida, USA, via USPS. I will use either 1st class package for cheaper items or priority mail. Shipping cost will in most cases be around $10 for US addresses, higher for bulkier items.
For more items please see also Texas Instruments Items For Sale – vintagecalc.
Note: starting Oct 5th I will be in Europe and I may be able to ship from within the EU. Please contact me for details.
Shipping overseas is also through USPS; unfortunately USPS has increased prices tremendously, cheapest package under 1 pound to UK for example is about $30 and insured around $45. Not much I can do here. If you want an exact shipping cost please send me a message via the contact form at the bottom and I will compute.
Canadian shipping may be cheaper, also please contact me.
Please note that I have tested all items to the best of my abilities and the results are shown. However this only means that at the time of the test, the item worked as advertised. These are 30, 40 and in some cases even older pieces of electronic equipment. S*it might happen; I will not guarantee the machines will work, unless I specifically say so. Things might happen anytime. However generally I am willing to take the calculator back and refund your purchase money, buyer pays for shipping. This is a hobby, not a commercial enterprise. I am usually only making money to spend on other stuff!
HP-IL Printer HP-82162a
HP-82161a Cassette Unit
Magnetic Cards for HP-71b and HP-75b
Corvus 615 with soft case
HP-71b not working
Nixdorf LK-3000 in box brand new
HP 82161a Cassette Unit Not Fully Working
HP-45 Calculator in hard case with all accessories
HP-45 Calculator In Hard Case Very Early S/N
HP-12c calculator
Canon Canola L804 small desktop calculator
HP-41CX Calculator Geodat 126 Module Geodimeter
HP-41 Soft Case
HP-41CX Not Working Correctly
HP-71b 4k memory module with data sheet
HP-71b Finance Module
HP-71b Text Editor with Quick Reference Guide
HP-71b Blank Overlay
HP-71b Battery Cover
HP-71b Card Reader Back Cover
HP-41 Top Port Cover
HP-71b Battery Springs and middle contact
LCD Calculators (TI, Casio, Sharp)
HP-67 / 97 EE Pac I in Box
HP-67 / 97 Stat Pac I in Box
HP-67 / 97 Math Pac I in Box
HP-67 / 97 Business Decisions Pac in Box
HP-45 Board (working)
HP-IL Cable 5m & 0.5m
HP-41CX with case with case and quick ref guide
HP-41CX with manuals
HP-41 Advantage and Surveying pacs
HP-41 Advantage with manual and how-to book in box
HP-41 Math/Stat module, manuals, quick ref guides, overlays
HP-41 Structural Analysis, manual, overlays in box (STRUC ANAL X)
HP-41 STRESS pac (module only)
HP-41 Surveying Pac with manual and overlays in box
HP-41 Infrared Adapter HP-82242a with manual in box
HP-41 Standard Pac with Quick Ref Guide and Manual
HP-35 Battery (for rebuild only)
HP-35 Classic plus manual with the 2.02 bug
HP-35 Classic in hard case late edition
HP-35 Classic in hard case early edition
HP-41CV in box with all manuals
HP-82140B Printer with AC adapter (working)
HP-27 Original Manual
HP-27
HP-70 with Manuals
HP-21 with Case and Manual
HP-IL Printer HP-82162a $125. Works. Beware it will not work without a battery, I tested it connected to a lab power supply. Paper advance works well, all thermal print heads work well. A suitable AC adapter (82059) is available for an extra $15.
HP-82161a Cassette Unit $150. Works. Tested on a HP-75C. I was able to INITIALIZE, CAT, COPY to/from the tape. Beware it will not work without a battery, I tested it connected to a lab power supply. A suitable AC adapter (82059) is available for an extra $15. No tapes are included, tapes are available separately both used ($20) and new ($35). I have two units, both made in the USA. The image is showing only one of the units, second is identical (except for S/N which is also close).
Magnetic Cards for the HP-71b and HP-75c $3. Sold individually, many available.
Corvus 615 with soft case $50. The calculator was tested with 3 AA batteries (not included). It looks like new, never used. Pristine condition.
HP-71b not working. Make an offer. I have two units. One of the units has the zebra connector inside missing; I do not remember what problem the other had. I do not even remember if I opened the second unit or not. No covers are included with either unit, neither powers up.
Nixdorf LK-3000 in box brand new $30. I have removed the old batteries from the unit long ago to avoid leaks. This calculator will not work on its own, it needs an extra cartridge which defines the function. Cartridges were developed for various language translations, trivia storage, notebook, scientific calculator and probably others. No cartridge in included with the item.
HP 82161a Cassette Unit Not Fully Working. Make an offer. The unit winds and rewinds, loads a tape ok, answers HP-IL commands but any attempt to read or write fails. Anyone needs parts? The unit has no corrosion and no defects that can be seen with the naked eye.
HP-45 Calculator in hard case with all accessories $150. The calculator works well and does not have visible defects apart from the wear on the silver paint on the front. Fully tested. The AC adapter also tested. The leather soft case and manuals also included.
HP-45 Calculator In Hard Case Very Early S/N $250. The calculator looks perfect. The serial number suggests a fabrication date of 1st week of January 1973, 5 months before the official introduction date (May). The label is also peculiar, it looks completely different than other similar machines. The machine works well, so does the AC adapter.
HP-12c calculator $9. The calculator works well, passed self test. It is one of the first calculators, made in the USA in 1982. It does not look very good but it works. Batteries included, new. When I tested it a couple of weeks ago all LEWD segments were fine; now I see the 9th digit from the left (2nd from the right) is missing two segments. No idea why or if it is a permanent issue.
Canon Canola L804 small desktop calculator $9. Works well with 4 AA batteries (not included).
HP-41CX Calculator with Geodat 126 Module and Geodimeter Hardware $400. The calculator works, one of the battery contacts had significant wear though and even if it was still working it has been resurfaced with some conductive epoxy (the positive pole, rightmost in the image). A battery compartment is not included with the calculator. It comes in a soft case which is in good condition. The calculator displays “Geodat 126” upon power up (see image) and after that “Transmit error” presumably because the hardware is not connected to anything. I do not have any documentation about this but the label on the back tells me the hardware includes a HP-IL interface plus a RC-232C interface (standard serial).
HP-41 Soft Case $14. No visible defects.
HP-41CX not working correctly – make an offer. The calculator turns on when batteries are inserted but it does not function correctly. Keypresses sometimes register correctly, sometimes do not register at all. Not so far in the past it DID work correctly though which makes me believe it is a contact (or more) which went bad inside. It is also possible that the machine was affected by some interference (we had plenty of storms) and if so, left without power a long time may cure the issue. The calculator seems to have a 41CV back since the label is not a CX label. Sold as is. No port covers are included, battery compartment also not included.
HP-71b 4k memory module with data sheet $40. Tested in a 71b which shows the correct amount of memory with the module(s) inserted but no exhaustive memory test was performed. I will include an original box (I only have one box).
HP-71b Finance Module $120. Just the module.
HP-71b Text Editor with Quick Reference Guide $120.
HP-71b Blank Overlay $5
HP-71b Battery Cover $25. I have two of these, no visible defects.
HP-71b HP-IL Port Cover $20. I have 4 of these, no visible defects.
HP-71b Card Reader Back Cover $25. No visible defects. The cover has the place for the rubber foot, the foot is not present. If necessary, I can include a small piece of self adhesive rubber suitable for cutting to size to make feet.
HP-41 Top Port Cover $7. I have 25 of these, no visible defects.
HP-71b Battery Springs and middle contact $10. There are two springs (one only in the image) and the middle contact from the other side of the battery bay. The springs were replaced later by elastic foam.
LCD Calculators (TI, Casio, Sharp) $25. Four LCD calculators, all working. The Fx-7 comes without batteries (takes 2xAA).
HP-67 / 97 EE Pac I in Box $50. Cards are untested but from experience I can say that it is very likely they will still work. Manual and box excellent.
HP-67 / 97 Stat Pac I in Box $50. Cards are untested but from experience I can say that it is very likely they will still work. Manual and box excellent.
HP-67 / 97 Math Pac I in Box $35. Cards are untested but from experience I can say that it is very likely they will still work. Manual and box excellent. One card is missing unfortunately.
HP-67 / 97 Business Decisions Pac in Box $50. Cards are untested but from experience I can say that it is very likely they will still work. Manual and box excellent.
HP-45 Board (working) $10. I have three of these, price is for one. During the years I had some calculators of the Classic family which needed parts and the only available source of parts (display drivers, parts of case, LED sticks) were other similar calculators. The HP-45 boards here are all working but they have nowhere to go!
HP-IL Cable 5m & 0.5m $45 and $25 respectively. Tested.
HP-41CX with case with case and quick ref guide $200. The calculator looks excellent, battery contacts excellent. It works well too. The batteries that are in the image were used for testing but are not included, they were old and I had to discard them. Two top module covers included, side cover included. Case also in excellent condition. The quick ref guide is a little beat up because it was stored inside the case with the calculator, but it is there.
HP-41CX with two manuals and quick ref guide $240. With both manuals, quick ref guide and Advantage (with manual) and Surveying (just the module) pac $350. Batteries (4xN type) not included. The calculator works well and looks excellent, the battery contacts are pristine. There is a name scratched on the back (shown in one image). All port covers included, side cover also included. Battery compartment and a Stop Watch overlay (not in the images) are included also. The Advantage module is working and includes a manual. The Surveying module is also tested and the manual and overlays are included. The calculator can be sold with or without the bundled modules, the modules can also be sold separately ($120 both if not purchased with the calculator).
HP-41 Advantage with manual and how-to book in box $120. The book is “Using your HP-41 Advantage: Statics for Students” by Chris Coffin (1985).
HP-41 Math/Stat module with manuals, quick ref guides and overlays $60.
HP-41 Structural Analysis with manual and overlays in box (STRUC ANAL X) $80.
HP-41 STRESS pac (module only) $40.
HP-41 Surveying Pac with manual and overlays in box $45.
HP-41 Infrared Adapter HP-82242a with manual in box $200.
HP-41 Standard Pac with quick ref guide and manual $60. The manual is not in the i9mage but is provided.
HP-35 Battery for Rebuild $5. Sold only together with one of the Classic calculators. The battery is not working, needs to be split and the cell replaced with new rechargeable batteries. The battery is used in all HP Classic family (34, 45, 55, 65, 67, 70, 80) and also in the HP-75.
HP-35 Classic with manual $175. The calculator has the 2.02 bug so it is one of the first 25,000 to be produced (the bug was discovered and fixed after that). Last image shows the result after 2.02 <ln> <e^x>. Manual included, status as seen. The calculator looks excellent as can be seen.
HP-35 Classic in hard case with all accessories $200. S/N 1346, made in 1973 (late edition). This is the configuration that HP sold at that time. Everything is in excellent condition and both the calculator and the AC adapter work well. The hard case locking tab is still in good condition and works well but cracks are starting to appear on it. A battery is not included but one is available if needed.
HP-35 Classic in hard case with all accessories $200. S/N 1143, made in 1971 (early edition). This is one of the first calculators to be produced (note the red dot style of serial number sticker) but it has probably been serviced by HP because it no longer has the famous 2.02 error. This is the configuration that HP sold at that time. Everything is in excellent condition and both the calculator and the AC adapter work well. The hard case locking tab is still in good condition and works well but cracks are starting to appear on it. A battery is not included but one is available if needed.
HP-41CV in box with all manuals make an offer. The calculator looks excellent, there is no movement between the two halves of the machine and no corrosion can be seen on the battery contacts. However, the calculator does not turn on and I made no attempt to see the cause. Two top port covers included, side cover included. Battery compartment also included, all in very good condition.
HP-82140B Printer with AC adapter (working) $70. The printer works normally and passes the self test. All print heads work as can be seen.
HP-27 Original Manual $40. The manual looks very good as can be seen.
HP-27 make an offer. The calculator turns on and I am able to perform some computations. Others seem to give incorrect results. I did not take it apart so I am not sure what’s inside. The calculator was not cleaned at all either. The tests were done with a lab power supply so the power was provided with alligator clips, in order to make it work with batteries it is likely the contacts need to be cleaned. Sold as is.
HP-70 with Manuals $500. The calculator works well, manual included as shown. The “applications” book is also included. The case included is the type that was delivered by HP with this type of calculator. The cosmetic shape is excellent and the calculator works fully. The original calculator motherboard was replaced with a modern board that emulates many other type of machines; more details about that type of board here HP Classic Calculator Emulator (teenix.org) but teenix.org does not offer the hHP-70 emulation. The screws under the label were not installed when the upgrade was done so the calculator can easily be taken apart and inspected. The actual calculator to emulate can be selected from a menu (of course the key assignments will no longer match) and I am showing this in one of the images.
HP-21 with Case and Manual $80. The manual is not original, it is a xerox copy only. The machine works well. A battery is not included but one is available for an extra $40 if necessary. The calculator was tested with a lab power supply with alligator clips, in order for the machine to work with batteries it is likely the battery terminals need to be cleaned.
