Re: Hello from Atlanta
Mine has actually the 6BK11 preamp tubes but you can substitute 6C10's because the 6BK11's are hard to find they are short stubby tubes about 1 1/2" tall . 7591 power tubes and 5y3 rectifier.
You should have a tube chart on the label inside the cab if you want to know whats in her. Mines a 1964 model year.