Also, in regards to that stash of McIntyres - I actually had a good phone call with the seller who was asking for some advice when he first found them.
He basically is a Storage Wars type of guy and won a storage locker at some place in South Carolina. Inside were apparently several hundred musical instruments, including apparently dozens of brand new/new old stock McIntyre Bb clarinets of various denominations.
It appears that McIntyre sold their inventory when they went bust, someone bought it all up, and left it to languish in storage along with dozens of other random instruments of all types.
He offered to let me come visit and check things out, but that was deep in COVID-time, and I declined. Should have gone anyways, that story could have made a great documentary.