Can you tell a Halfnut by it's SN?


What were the production runs for the Fullnut and Halfnut? If I have a serial number that begins with a 2526S (1985, week 26) can I tell what type of "nut" it is without actually seeing the 41cx?



Much easier to just look at the LCD. See and scroll down to HP-41C for the picture.


No, there is no clear demarcation between fullnut and halfnut serial numbers.


No. And you can't tell if it's a half or fullnut
given that it's a CX either.

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