I have a Conn 84A in really good condition for its age. It's in the original silver plate, which is in fair shape except for some spot plate and thinning around the valve casings, and no raw brass is showing. Engraving says
MADE BY C.G.CONN
ELKHART
IND.
The engraving goes all the way around the bell, and is also in great condition. The inside of the bell bell is thickly gold plated, and is in great shape. Initially it didn't seem to play well, but after taking it to get a light chem cleaning, it plays wonderfully. It has the slots for the quick change to A, so if you can find the parts you could use that. The bore is 0.438, a peashooter bore, so it would be good for jazz and high playing, possibly concert or orchestral with the right mouthpiece. Here are some pictures: https://imgur.com/a/M9088
Just message me with an offer, and I'll update this thread when it it sold. I'd like to get rid of it ASAP. Thank you!

I forgot to put a picture of the gold bell. Whoops. Here it is :) https://imgur.com/3pZrOOD