All four of these crank smoothly, but three are missing a roller, I believe.
I'm starting with the two oldest ones.
|I'll get to the Model 77's in a later post.|
2.) Mentions Edison on the label. I had wondered about that but one of my search hits happened to be an article in ETCetera. from 1991 (p. 10) giving the answer. This is Model no. 76.