U.S. Navy padlock from a WWI-era ship, USS San Diego (Armored Cruiser No. 6)
This padlock was recovered from WWI-era armored cruiser USS San Diego (Armored Cruiser No. 6). The obverse side is engraved with “USN” and the reverse side not shown is engraved with these words “ILCO/ Manuf. By Independent Lock Co. / Fitchburg. Mass USA/ Lubricate with Graphite”.