HP 35 first Lab Prototypes (17 made)
#1

Hi. I have Tom Holden's first HP 35 lab proto. He was one of the 15 team members at HP building the HP 35. He told me that one prototype was made for each member, plus one for Bill Hewlett and Dave Packard (total = 17). The prototype he traded to me had had the keyboard replaced, but the display, motherboard, back case and battery cover were suppose to be original. Two questions: 1) Does anyone know what happend to Tom? 2) How can I verify that I have one of the original 17 prototypes made? The proto that i have does have the orininal ln 2 bug, and he also gave me an extra mother board without the bug. Thanks for any knowledge you have.

#2

What, you've lost the Certificate of Authenticity? That's going to seriously reduce its eBay value!

:-)

#3

Hi

I have several HP-35A Proto PCB. Just have a look at the time stamp of the circuits...

Matthias

#4

This PCB is now part of Matthias' collection, but should be very close to the first working proto, dating back to week 45 of 1971...

It would be very interesting, which ROM versions are installed in your proto...






Possibly Related Threads…
Thread Author Replies Views Last Post
  HP-35 blind buy but buggy! Max Stone 7 2,847 11-11-2013, 05:56 PM
Last Post: Dieter
  Another HP 35 Red Dot on eBay Michael de Estrada 5 2,362 11-09-2013, 03:07 PM
Last Post: aj04062
  [HP-Prime] connector made with printer3D CompSystems 0 984 10-18-2013, 04:53 PM
Last Post: CompSystems
  Do You Think a Listing Error Was Made? Jim Johnson 13 3,781 09-04-2013, 09:23 AM
Last Post: Eddie W. Shore
  HP 35 ... 80 Olivier De Smet 6 2,429 08-29-2013, 07:25 AM
Last Post: Olivier De Smet
  About changing or deleting content after replies were made Raymond Del Tondo 1 1,096 08-26-2013, 05:01 PM
Last Post: Massimo Gnerucci (Italy)
  Self-made WP-34s flashing cable? Victor Koechli 6 2,879 08-15-2013, 10:11 AM
Last Post: Les Wright
  Update of Emu42 to v1.17 Christoph Giesselink 1 1,084 05-15-2013, 09:30 AM
Last Post: CompSystems
  My calculator prototypes CompSystems 1 1,074 04-25-2013, 03:57 AM
Last Post: Mike (Stgt)
  NCTM, Denver April 17-20 Tim Wessman 1 992 03-16-2013, 06:41 AM
Last Post: bluesun08

Forum Jump: