hey guys i bought marshall jmp super p.a. 100 w head, but it doesent have any serial numbers, it only say "serial no sp 02"
the guy that i have buyed this amp told me that it was manifactured in 1969 and thats why it doesent have a serial number
so can you guys help me and tell me did i bought an original marshall or i got screwed???
THANKS!
heres the image from the back of the amp