I have a Marshall Super Bass 100W amp (American Version) I've had since brand new... I had always thought it was made in 1969 tho I'm not sure...

On the Paper tag on top of the chassis it says:

"Assembly" --> Job M      No 81

"A.C" --> Andy

"Tag Board"  --> Joyce H

"Back Panel" --> l k

"Tested" -->  T-20-69  (the T could be a 1, not sure)

Serial Number: SB/A 2231A

Thanks!!!!!

Keith