AE model 50
This was made from the late 30's through the mid 50's. A similar looking wall phone, the model 35, was introduced in the early 30's. It lacks vents on the sides, and usually has the earlier type handset. The 50 was replaced by the model 90 around 1956.
I have a model 50, less the dial - just has the blank plate - as it was used with a PBX. I got it when the downtown Pogue's Dept. store closed in 1988. I found it in the subbasement. It's one of my most prized possessions.
AE made beautiful phones until they came out with the models 80 and 90.