b36c220Premier did not keep records of seairl numbers, in fact they did not seem to have a regular method of keeping the seairl numbers in order. Different times in the company's history had different numbers it seems, at least from the amps that I own.You have to look at the numbers on the back of the pots or on the speaker if it is original. Sometimes there is a number on the capacitor can.I am unemployed at the moment and have no cash. I am fixing up my amps so I can sell them. I can't buy now.Keith1a8cbb