Rotors are out. 3 rotors are in a box, one is just missing altogether. I haven't tried to do anything with the rotors, so I don't know how they are. If they are like the slides, they are great. If not, they're not.
.830 bore by my dial calipers! This is the same bore as the Russian ones and some Amati/Cerveny. It looks more like the European ones to me, especially noting the adjustable clock springs on the paddle assembly. I'm pretty sure it could turn into a nice tuba for some money.

