[Hallicrafters] Off-subject question on telephones

[Waldo Magnuson]

My daughter bought a c.1938 WE302 telephone.  The phone rang twice and 
then the ringer coil opened up (too much voltage I guess).  Is there a 
Hallicrafters person on the forum expert in telephones that could 
contact me?  I'm thinking that maybe a couple of protection zener 
diodes across the ringer coil could protect burn-out of a replacement 
coil.  Thanks.
73,  Skip  W7WGM