Measures 2 3/4 inches tall by 1 1/4 inches wide. Stamped on the back it was manufactured by Keystone Badge Company in Reading, PA. The pin is in very good condition except obviously the silk American flag ribbon shows age. Please review the high definition pictures for more condition detail.
Postnote: I would guess that this probably was created for the 1939 50th anniversary celebration of the McSherrystown, PA Fireman's Association.