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Full Version: HP-41CV Halfnut with serial number beginning 2336
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There is what appears to be an HP-41CV halfnut with a serial number beginning 2336 on ebay. The owner says it has never been repaired and he is the original owner. Is it correct that there were no HP-41CVs produced with rounded displays before 1985? Ebay link is http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220287388690&ssPageName=ADME:X:RTQ:US:1123. My ebay name is kctongo, and this is not my listing.


The Halfnut was announced in the Jul/Aug '85 issue of CHHU Chronicle. The article says the project of making a reduced-cost 41 started in the summer of '83, and since cutting the number of ports in half from the Coconut (please, everyone-- there NEVER WAS was a "Fullnut"!!!) was one of the ideas, it was natural to call the project a "Halfnut."

Edited: 29 Sept 2008, 6:43 p.m.

The owner says it has never been repaired and he is the original owner

Then his memory is failing. There is no doubt in my mind that it was repaired by HP. Two irrefutable facts that indicate HP repair:

1) The serial number is for a fullnut and the top half of the unit is a halfnut.

2) The port/battery block is not original 1983.

My take? Most likely a corrosion damage repair sometime after ~1988 or so when they started doing swap outs using halfnuts rather than repairing the fullnuts.

I'd be willing to bet a sum of money that when you open the unit, you'll find a round white label stuck inside the case bottom with a bunch of code letters along with the HP tech's initials and the date of repair.