Serial Number Placement


Hello all.

As I have noticed in my collection, only the 35 and 45 have their serial numbers placed inside the battery bay. During which model's production did the serial number placement change to the back of the calculator. Or was it at the introduction of one of the Classics did HP start placing the serial numbers on the back?



The HP 65, 70 and 80 also have the s/n inside the battery compartment. A later version of the 65 did move it to the outside.


Thanks for the remind.


Well, actually they started with a serial# on the back (with the HP35 red dot) but moved it to the inside (using a larger lettering and differnt sticker) sometimes during the HP35 V2 production.

Possibly Related Threads…
Thread Author Replies Views Last Post
  Oldest HP 41c aka earliest Serial Number Gene Wright 23 5,801 09-05-2013, 03:45 AM
Last Post: Geoff Quickfall
  HP15c LE - highest serial number over 23.000 Jose Gonzalez Divasson 1 1,200 05-16-2012, 03:19 AM
Last Post: Torsten
  odd serial number on HP97S Alberto Fenini 1 997 03-20-2010, 11:25 PM
Last Post: Eric Smith
  HP-35 Bug: highest serial number? Mark Henderson 5 1,768 02-25-2010, 02:00 PM
Last Post: tomdrewski
  HP-41C with unusual serial number ? Marc Ferrer (France) 3 1,265 02-21-2010, 04:42 AM
Last Post: Marc Ferrer (France)
  HP 48 serial cable but no serial port in laptop juan demin 10 2,632 09-09-2009, 02:20 PM
Last Post: Patrick Rendulic
  Hp50g Serial Number Quan 3 1,513 07-05-2009, 11:57 PM
Last Post: Quan
  HP-41CV Halfnut with serial number beginning 2336 Dan Grelinger 2 1,108 09-29-2008, 07:54 PM
Last Post: Randy Sloyer
  HP 50G serial number hpnut 12 3,124 08-16-2008, 05:08 PM
Last Post: Scott Newell
  Deciphering a HP 48G Serial Number Jeff Kearns 1 898 08-25-2007, 06:12 PM
Last Post: Seth Morabito

Forum Jump: