M3-SRT8
03-24-2014, 12:29 PM
I'd like to know, and Eric can certainly help with this, as well as members here, the following questions, as it pertains to serial numbers.
How many 621TS's have their original tubes, and what are the date codes on the tubes.
Which 621s have 6AT6 sound detectors and which have 6AL5s.
What is the date interval of 621 production. When did it begin, and when did it end.
Enquiring minds, want to know...:smoke:
How many 621TS's have their original tubes, and what are the date codes on the tubes.
Which 621s have 6AT6 sound detectors and which have 6AL5s.
What is the date interval of 621 production. When did it begin, and when did it end.
Enquiring minds, want to know...:smoke: