This metal soprano clarinet mouthpiece was manufactured by Goldbeck & Company Makers of Chicago, Illinois & patented on February 20, 1920. It is 3” long and is engraved with a number 3 (it also looks like an 8). It is in good used condition for being over a century old.

Two musicians have said this is an alto saxophone mouthpiece instead of a soprano clarinet mouthpiece. Look closely to determine for yourself which is correct.