Postal life

Postal life

4.11 - 1251 ratings - Source

Putting together the serial lock, the big brass padlock that is used on street collection boxes and vehicles, is the ... There are 70 possible tumbler combinations for a serial lock. ... There are more than 100, 000 different lock box key codes.

Title:Postal life
Author:United States Postal Service. Dept. of Public and Employee Communications, United States. Post Office Dept. Office of Public Information, United States Postal Service. Communications Dept
Publisher: - 1981-03


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