Vintage Bell System Western Electric 685A ? Subset Network Ringer Box

Description

Vintage Bell System Western Electric 685A ? Subset Network Ringer Box  1962 Rings Good!
It looks like a WE 685A subset but I m not sure, the numbers on the back are hard to read.
Used subset ringer box - cover does have some scratches and marks which are hard to photograph. It does have some rust and corrosion.
This subset does not have the terminal strip and was wired direct to the network.
Rings loud and clear but that is all that has been tested.
Check all pictures and your application carefully.