looks to me like coins we used to fish out under the belts at the grocery store, the would throw coins on the belt, then the coins would get swept under the belt, and sit down there until maintenance was preformed on the cash register lanes, when they pulled the metal tray off, all the coins showed wear like this.. they sat there with the belts, and metal rollers turning on them for months..
Edited by silverwolf
03/02/2020 7:31 pm