Hey all, I have what I'm pretty sure is a Mark IIB, that I got used in the 80s, and had Mike Bendinelli put a Deaf Louie FX loop on at Mesa. The slave out is still there.
Serial number is 3217.
60-100w switchable, 5-Band EQ, head not a combo, no 'verb. Wheat colored tolex & cloth. I put 7 or 8...