I have no experience with trombones but a little bit with trumpets and cornets. I have acquired a ~1947 Buescher trombone and would like to play around with it some, mainly to get my kids interested. (Bringing home derelict or unwanted instruments has produced a cornet player and a piano player so far.) In other words, I want it functional but we aren't very serious about playing at this point.
My primary question is about the mouthpiece. This one came with a Bach 9 and it seems to work and is comfortable but the plating is worn off enough to be icky. Would a new Bach 9 work in this instrument or do I need to find a vintage one? I know old trumpet and especially cornet mouthpieces can have varying shank sizes and tapers and it can matter a lot if you have the right one. Is this the case for trombones? The internet has convinced me that Buescher wasn't exactly a trombone powerhouse back in the day...I can't find much info.
And, of course, is a Bach 9 a terrible mouthpiece for beginners altogether?
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If there is any interest from a kid whatsoever, I'll get the trombone overhauled--or more likely, get a modern one--and some lessons. We don't have a good local shop for vintage brass so I'm going to wait and see. I figured a new mouthpiece couldn't hurt though.
Thanks for any guidance!