Vintage US Postmaster PO Box Lock Out Key

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We have for sale a Vintage US Postmaster PO Box Lock Out Key
This is an odd find it is a Postmaster postal box lockout key used to lock out PO boxes. If for some reason the Postmaster did not want someone to have access to their PO Box this key would have been placed in the lock from the backside of the door so that the customer could not insert there key in the front of the PO Box. The key is hinged and the hook on the bottom of the key would clip on the lock mechanism so the key could not be pushed out from the other side.
Made by; Yale & Towne MFG Co.
Patent dates on these are 1878, 1880, 1891

Measures; 2.375” long.



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SKU #2718

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