I had a rotary version of this once and was told they were only made as prototypes for AT&T execs. Its neat to be able to see the insides, much like the modern, high quality clear reproductions Ray Kotke makes. here's an example of a clear AE40 I bought that he made: http://www.telephonearchive.com/dmworkshop/items/clear_ae40_kotke.html
I had a rotary version of this once and was told they were only made as prototypes for AT&T execs. Its neat to be able to see the insides, much like the modern, high quality clear reproductions Ray Kotke makes. here's an example of a clear AE40 I bought that he made: http://www.telephonearchive.com/dmworkshop/items/clear_ae40_kotke.html