Hi! I'm new to these forms, but recently I started playing bass clarinet. My model is a Bundy with a serial number of 48100, but I can't find the year. Anyone know?
You have, unfortunately, two problems: you have a student-level horn and most folks don't keep very good track of those serial numbers -- pro instruments are what you usually see -- and you're talking about a non-Bb soprano. @Steve might know. I think your best bet might be to contact Conn-Selmer through their website.
"Harmony" clarinets, even pro level ones, seem to always depart from the norm for serial numbers. I really don't know why. Then again, I do deal with Yanagasawa serial numbers, which are all kinds of screwy, and Yamaha serial numbers, which have no relation to anything, really.