[Hallicrafters] SX 100 MK I B

[John King]

I still don't know what my Hallicrafters SX 100 MK I B is. On the rear of the T Notch filter assembly is stamped "Mark I B".  I have heard about SX 100MK I and SX 100 MKII but no "SX 100 MK I B". Anyone have any accurate and authoritative information about the existence of an SX 100 MK I B?

Surely there is information somewhere about such a Hallicrafters SX 100 MK I B. Thanks for reading and commenting if you have the information that I can rely on. 73, John, K5PGW