[Dave Dolson]

I've owned a few Conn sopranos in my time . . . never thought to look for a serial number on the back of any lever. Some folks confuse the serial number with the Patent number that most Conns had stamped on the back of the tube. A five-digit number makes that saxophone really old. I wouldn't be too concerned about the presence or absence of any numbers stamped on the keywork.

If you are looking for one to buy, have you contaced Gayle Fredenburgh (vintagesax.com) in Florida? DAVE