Sorry foe the intrusion, but I just wanted to know if anyone knows the difference between models 274 and 374? The 374 costs twice as much as 274, apparently the same; in the specifications there is a difference in the use of the material, brass 70/30 against brass 80/20, case and mouthpiece different than the trigger, but I do not seem to differ such as to justify such a price difference.
2007 Besson Prestige 2052, 3D+ K&G mouthpiece; JP373 baritone, 4B modified K&G mouthpiece; Bach 42GO trombone, T4C K&G mouthpiece; 1973 Besson New Standard 3 compensated valves, 3D+ K&G modified mouthpiece; Wessex French C tuba, 3D+ K&G modified mouthpiece.