D359/E104-1 questions
Just got in an epic collection and in it were a few Rochester Baking A's but there was also a Dygert blank back. Doing some digging I found that the E104-1's can come blank backed, but here's the thing there's a very neat, apparently stamped horizontally and very well centered:
SWIFT,
244 w. 23d St.
Has anyone seen this particular back stamp before?
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