Looks a bit crunchy in spots. Lots of patches and the bell rim looks like it's disintegrating. This music store is somewhat local to me (about 50 minutes away) and they occasionally have interesting, if slightly overpriced, stuff. I'd bet they'd take an offer.
Looks similar to mine- if so, the bore is probably 0.787". Should be a great player when properly repaired, but they'd have to drop the price to make it feasible.
Principal tuba, Bel Air Community Band
Old (early 1900s?) Alexander BBb proto-163
1976 Sonora (B&S 101) 4-rotor BBb
1964 Conn 20J/21J BBb (one body, both bells)
~1904 York 3P BBb Helicon
Old Alex Comp.F, in shop