English: Casket with the Remains of a Combination Lock
Jazira, northern Iraq
first half of the 13th century AD
brass, sheet and cast, with lavish silver inlay
20.5 x 19.5 x 16cm
The lid has four dials, each with 16 letters in abjadi (numerical value) order and pointers which can still be turned, although the lock mechanism is now missing. Only four other Islamic caskets with this type of lock are known to exist.
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