Richard NL
Well-known member
In this article C. M. Hoke, suggest chemist give up old Platinum not in use.
April 17 1918 in The Jewelers' circular.
View attachment c.m.hoke suggest chemist give up old platinum not in use.pdf or
https://www.scribd.com/document/377800666/C-M-Hoke-Suggest-Chemist-Give-Up-Old-Platinum-Not-in-Use
April 17 1918 in The Jewelers' circular.
View attachment c.m.hoke suggest chemist give up old platinum not in use.pdf or
https://www.scribd.com/document/377800666/C-M-Hoke-Suggest-Chemist-Give-Up-Old-Platinum-Not-in-Use