Historical information
Used for locking correspondence boxes belonging to the MMTB.
Significance
An object in common use of an organization that has ceased to exist since 1983, with its actual creation date as early as the 1920s.
Physical description
Large metallic MMTB padlock for a correspondence box. The side of the key hole has the inscription "MMTB," while "516" is inscribed on the opposide side. The key is made from similar material to the lock.
Inscriptions & markings
"MMTB" and "516"