" Key "
Iron key with sliding ring called "passe-partout"; the rod of a single piece of iron carries two bits of different types to open all the doors of the house and the heart-shaped ring has a cutout on each side to fit into one of the bits in order to '' open using the opposite side in the lock.France, late 18th century
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato