Here are some photos from George KW7GAM showing his antique phone. Click on the slide show thumbnail to view the photos full size. George said:
The old Western Electric telephone needed a few drops of oil on the generator shaft. I had to open it up so I took a couple of pictures.
My Dad brought it up from South Alabama when we were kids in the 1950s. I'm sure it must have been when my future company, GTE, was converting to dial in its Alabama properties. My brother and I had it working back then, and I restored it in the 1970s.
See the little key hanging on a loop of the battery wire that the telephone man used to open the compartment with the secret electronics.