Vintage black rotary dial desk telephone
GTE - Automatic Electric
Testing results from standard landline connected directly to a wall jack:
Calls can be made and received
Does not ring
There doesn't seem to be a volume control dial on the bottom, so I'm thinking this is a bedroom extension telephone. No sound so your sleep isn't distrubed.
Plastic dial rotates and returns smoothly
Note wire hookup
Handset has no markings
Cradle: Automatic Electric Northlake, Ill USA
Bottom: NB802 CXX 5-65-8
Back: AC-1