The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Patented September 8, 1891

If an object in your hands says PAT. SEPTEMBER 8, 1891, it may be one of these.

PatentTitleInventorOf
US 459,065COIN-FREED APPARATUS FOR EXHIBITING OPTICAL ILLUSIONSEdmund EdwardsLondon, England

All dates