3 Slot Parts interchange

[jglad]

Will the vault doors, vault locks, and coin boxes interchange between Automatic Electric and Western Electric 3 slot payphones?

[poplar1]

The Automatic Electric door requires an AE lock. Both the WE and NE doors will accept only NE or WE locks. Other than that, the parts are interchangeable-- you can use an AE door on a WE phone, for example.

Also, the upper housing locks -- WE 10G or 10H, AE 29-S, and Northern Electric 21-B are interchangeable.