I am looking for 2 valve caps for a Besson 3 valve compensating euphonium. s/n 455xxx. These are the valve caps that are sort of shaped like a crown. I also need a valve button for this horn (somewhat conical and deeply "skirted"). My understanding is that Besson no longer sells parts to / through parts dealers like Allied and it is difficult to get parts directly from Besson.
(By way of explanation, I bought this horn as an "organ donor" for another Besson and decided instead to try and fix it and play or sell it. The other Besson is a 4 valve comp. with removable bell front.)