Barron 3 tumbler Rim Dead lock.
Artefact No. 171. D: 19th century. CoR: England.

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Lock Sz: body 180 x 118mm, (excluding extended bolt bolt), Mt: brass, iron, steel.
Key Sz: 102mm. Mat: steel.
A rim deadlock with 3 double acting tumblers and a bridge ward. Single sided operation.