Hi,
I just want to share with you some pics of one HP-41C halfnut I just bought recently for 27 dollars.
This unit is from the estate of an engineer in Oregon involved according to the seller in the early development of such devices.
It works perfectly after some repairs (Beeper and bottom shell were missing)
I have also pluged a quad module which has been recognized....
You know what, sometimes, I feel Lucky :)
[url: http://img697.imageshack.us/img697/5755/img3052g.jpg]
[url: http://img691.imageshack.us/img691/4608/img3047y.jpg]
[url: http://img690.imageshack.us/img690/95/sanstitrebk.png]
[url: http://img709.imageshack.us/img709/8256/img3075g.jpg]