My husband found these old keys in his grandparents’ house, but none seem to fit any door. Could they have belonged to an antique cabinet, desk, trunk, clock, or another piece of furniture that is no longer there? Old keys were often made for much more than doors, and their size and shape can reveal their original purpose. What do you think these mysterious keys were used for? Read all the details in the comments. 👇👇 See less

This vintage multi-purpose tool—often recognized as a traditional sardine tin or can key—was designed to open metal cans that featured a tear-strip lid.

 

By inserting the starting tab of the metal band into the slot and rolling the key, users could easily peel back the lid. Additionally, the integrated hexagonal opening at the top often functioned as a small wrench or tightening key for specific household or appliance valves.

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