This un-engraved nickel Hoyer double is a pre-war model. It's made of unlacquered nickel and has a one piece bell. It doesn't have any major damage, though there is evidence of previous work done on it. The mechanical linkage can be reversed to have it stand in Bb if desired.
Though the compression number is poor (5.0) it has a fabulous high Bb. Imagine, with a valve rebuild, what a fabulous horn this could be.
Holton Fixed bell case included