This is a Vincent Bach Corp 1 (no period, no dot) mouthpiece. Manufactured around 1965-70, just after the Mt. Vernon era. The tone is truly wonderful. Although there is some clouding due to age, there are no dents in the shank, and the condition is quite good for a piece from this era. Unfortunately, due to a change in my main instrument, the shank no longer fits, so I am offering it for sale. This is a valuable model number, so please consider this opportunity. #Bach #TrumpetMouthpiece