12C Platinum vs. 48GX vs. 50g (Speed Test)

[rprosperi]

(09-30-2020 09:24 PM)JDW Wrote:  There must have been more than one version of the 12C Platinum made because the the woefully out of date Platinum Manual (dated 2005) talks only about a model with a single CR2032 battery. Mine has two batteries. That leads me to wonder if there have been differences in the keys among "Platinum" versions through the years.

There are at least 5 'generations' of 12CP, likely more; among them:

1. Silver face, 1x2032, No Parentheses, Undo, BkSp functions (fastest model, as no Undo overhead)
2. Silver face, 1x2032, adding Undo, Bksp, Parentheses (slower)
3. Black face, 1x2032, 25th Ann Model
4. Black face, 1x2032
5. Black face, 2x2032

Key feel differences (and related things like rattle) for a given model tend to be related more to the country of manufacture, than simply to a model's particular generation. It appears the manufactured solution, materials, etc. are local decisions and not mandated by the buyer (HP).

For more details, see Jebem's excellent article with lots of references and a nice summary document on the many flavors of 12C here:

https://www.hpmuseum.org/forum/thread-5180.html

[Moderator: Added Parentheses info to the above list]