“U.S. CUSTOMS” – “I.S&R. SUPPLY Co”. 3 1/4″ high x 2 3/4″ wide. Brass body. Brass shackle. A paper seal padlock. “U.S. CUSTOMS I.S&R. SUPPLY Co NEW YORK PATENTED JUNE 9.1874” is stamped on the reverse of the body.Patent # 151748.