Posted by or 1240 on February 05, 2002 at 06:35:13:
In Reply to: king tuba question posted by ken k on February 04, 2002 at 23:30:12:
Daryl is right, 2340 is the three valve version of 2341.
If the horn is older, say pre 1970, the model numbers are 1241 (4 valves) and 1240 (3 valves)