Democratic Sentinel, Volume 16, Number 17, Rensselaer, Jasper County, 13 May 1892 — Friction. [ARTICLE]

Friction.

A gold coin passes from one to another 2,000,000 times before the s'tamp or impression upon it becomes obliterated by friction, while a silver coin changes between 3,250,000 times before it becomes entirely effaced.