Posted by Chuck(G) on August 16, 2002 at 11:51:43:
In Reply to: Conn 20j S/N? posted by ED on August 16, 2002 at 11:40:40:
This instrument was probably made in 1965, but the serial number says nothing about the model. The various model characteristics have been documented before on this list, but if it's a 2XJ, pull the second valve slide and measure the inside diameter. It shoulb be 0.770.