I have noticed a frequent seller on ebay offering copies of service manuals for the 100 & 200 series amps. (I remember noting that he had bought an inventory of original literature last year).
My question to the group is: I have a 1972 model 150 guitar head (w/ 2-12 Altec cab.)---Would a copy of the service manual for a model 100-2 be of any value to me should I need service?? I have emailed the seller some time ago inquiring if he had any manuals for the 150 series, I assume no response means he does not.