I acquired a mouthpiece marked " Vincent Bach, New York 7 Trumpet Mouthpiece " in a lot at an auction. It also has W2 marked on the rim and throat. I can't seem to find any information about this mouthpiece. The cup is deep and fairly wide, it's almost a V cup. Does anyone have any insights as to approximate age (I'm guessing 20's) and maybe an idea of value ?

thanks in advance !