This is an antique shield-shaped warded padlock, a design commonly referred to as a smokehouse or jailhouse style lock. The lock body and thick shackle are constructed of iron, featuring a decorative brass keyhole escutcheon. The keyhole is designed for a barrel-style key and features a central pin. A circular stamped mark is present on the front face above the escutcheon, though the specific characters are not legible due to heavy surface oxidation and pitting. The lock body shows a layered construction with a thick side band. 3 inches wide by 4.5 inches high.