I have a fifty year old F.E. Olds & Sons Ambassador cornet. It lay unused for 30+ years (it is now oiled and greased properly). There is considerable tarnish on the mouthpiece and on the slides. ...
I've recently bought a cheap battered second (probably mode) hand sousaphone on a garage sale. It is in faily bad shape, but the valves look ok. The instrument is made of a metallic grey alloy which ...