From the picture here;
https://nsarchive2.gwu.edu/nukevault/ebb371/photos/photo%202.jpg
Strikes me as a modified blanked Western Electric type - but my knowledge is poor.
The image is from a fascinating article about the nuclear false alarm of 1979 , here https://nsarchive2.gwu.edu/nukevault/ebb371
Many thanks in advance!
James
It is a 500 model that has been converted to an intercom. Lots of companies used existing phones to create intercoms. I have a few in my collection, WE 300 & 500 models, and Conn Telephone & Electric come to mind. It is not possible to tell if this is a WE phone from the 1 picture but I would hazard a guess that is most probably is.
Interesting article.
Image and article (in PDF format) have been attached to the first post for posterity.