07-11-2001, 09:45 AM
Hi, around early 1975 the HP-21/25 were sold with a new-style stamped serial number. However, after the introduction of these models, production of some of the classic models continued for a shorter or longer periode.
Therefore, does anyone know of HP-45/55/65/80 with stamped serial numbers, or did they all continue with the metal sticker?
Regards
Bo Kristoffersen
Copenhagen/Denmark