This explains why my Holton that I put together and (per typical) stuck a King valve section on sounds completely like a York instrument.
Their proof - at least to themselves - is as follows:
(and it's enough to convince me, though - before - I was neither leaning towards or away from this theory, but was just happy to have lucked out and been able to pick up such a great-sounding instrument for only a handful of hundreds of dollars, as far as something to start with)
When my friend un-soldered the bell and bows of one of the E flat versions of the Holton instruments, they found "51" stamped on one of the bows where it inserts into the connecting ferrule.
51, they went on to tell me, was the model of the York E-flat.
I tend to wonder about the old pre-345 Holton 6/4 instruments as well.
Further, this explains to me why the very similar-looking Phillips models - - models 330 and 331 (created/sold before G. Leblanc, USA was shuttered, and some of their tooling was sold to Conn-Selmer) completely "missed the boat" (resonance), and don't sound the same nor play the same at all... with apologies to those of you who own and love your Phillips models...(and - by the same token - all power to you.



