Most Treasured HP Collectible

[Didier Lachieze]

My most treasured HP collectible, for its rarity and value is for sure my HP-35 Red Dot. It took me 10 years to find an affordable one (57€ shipping included).

Then there is the 41C from my student years which still remains one of my favorite. I have now a whole family: 41CV, 41CX, 41CL and DM41X, plus a bunch of accessories and modules. The rarest being a Comsys bubble memory unit with an HP-IL interface, initially developed in Australia for the HP-71b. Unfortunately it's not working and I've not yet had enough spare time to work on it.

But I must say that in the past years the HP calculator I've used the most is the HP Prime. Not yet collectible but a fun and very powerful tool.