Patented February 27, 1877

If an object in your hands says PAT. FEBRUARY 27, 1877, it may be one of these.

Patent	Title	Inventor	Of
US 187,936	IMPROVEMENT IN DETECTERS OF COUNTERFEIT COIN	John A. Thompson	Chicago, Illinois
US 187,938	IMPROVEMENT IN DEVICES FOR DETECTING COUNTERFEIT COIN.	Thomas J. Towsey	New York, New York

All dates