Here’s a current auction on eBay (link while it lasts: http://www.ebay.com/itm/251218991245?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649).

Pictures and description:

Here is the second of a couple, obviously lightly used, NASA surplus scientific calculators along with its very clean carry case, HP 82041 charger and various user manuals. The user personal ID number is inscribed on title page of user guide, has property tag (permanently?) attached to case bottom and the inventory date tags are remaining.  The keyboard and case are in remarkably fine condition with few visible signs of use and the display is crisp and bright.  The NiCad batteries were dead and had to be replaced with new.   The original battery pack was carefully split along the seam to retain the original appearance. If properly maintained this rebuilt battery should provide years of continued service.  There is an HP serial number on case back – “1601A14183” and ID # of 721 on the title page of user guide.  Thanks for your interest and good luck bidding.

HP-25

HP-25

HP-25

HP-25

HP-25

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