Slotted plug which fits in the Center of the Upper Housing
to take the
place of the lock which was used in the Center hole to secure the Upper
Housing to the rest of the phone.
The lock was removed from a lot of
phones leaving a hole in the Upper Housing and allowing easy access
to the Upper Housing. Allows you to open and take
the Upper Housing
off with a flat blade screwdriver. Will fit on the 1920's-30's and 1940's-50's
3-slot pay telephones.
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