I have an UGLY FINISH (completely sound, mechanically) Yamaha YBB-321 with a Yamaha case (with no cracks).
The case is missing a fancy latch (no longer available...I've looked - a LOT) so my plan is to replace BOTH latches with the "square style" drawbolt latches that they now use on these cases (for a symmetrical look).
I don't have time to clean it now (nor remove minor dents), but I should have time in two or three weeks, if interested.
I quoted $900 (I actually have two of these, so I quoted $1800) to a private school. He wants them, but (as school has already begun) their budget is set until December (and - well - he's already spent $15K buying instruments from me...a new program).
I would sell you the nicer of the two that I have, but - again - both have UGLY original lacquer.
I've been playing the uglier one on gigs whereby (as an "orchestral tuba player" - fwiw

) I've had to play things such as "Pictures" and "Mars" (whereby those parts are pretty darn high, and smaller-bore euphoniums - such as 321's - .571" w/11-inch bell) are ideal.
I could either leave the standard shank receiver on it, or (if desired) I could look around here and see if I can scrounge a large shank receiver.