We recently discovered a family collection of locks and keys. We are curious as to the stories behind them, if they are collectible, and if there is any value.

The oldest item seems to be a key:


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On the back of the board that the key is attached to is a description of the key:


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Here are some closer images of the two ends of the key:


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The key is about 8" long.


Any input is appreciated. Thank you!