” – Commercial. 4″ high x 2 3/4″ wide. Brass body. Brass shackle. A paper seal padlock. The reverse of the case is blank. “1381” is stamped on the obverse of the shackle. “AM. SEAL LOCK Co. NEW YORK PATENTED 18 JAN’Y 1870” is stamped on the reverse of the shackle.Patent # 98917.