WE S454?

[LarryInMichigan]

I bought a horribly dirty black 302-type phone this morning at the local flea market for $15.  The dates in it are 1951.  The shell has "H3" in vermilion in it, and on the bottom there is "S454" in vermilion.  The inductor coil is a 101-B, and the hook switch has the extra contacts.  Is "S454" the actual model designation?  What does it mean?

Larry

[poplar1]

H3 and 101B indicate that it is a 304. S454 is probably the rebuild date (April, 1954).