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

[JDW]

(09-30-2020 12:12 PM)Gamo Wrote:  I got three 12C

1. HP-12C+ (made in China used Two Coil batteries)
2. HP-12C (made in Singapore used Three Button batteries)
3. HP-12C Platinum (made in Philippines used Two Coil batteries)

There must have been more than one version of the 12C Platinum made because the the woefully out of date Platinum Manual (dated 2005) talks only about a model with a single CR2032 battery.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.