Vintage H. Bettony Boston, MA Hard Rubber Alto mouthpiece in excellent condition #4 facing. This is a very short shank, large chamber mouthpiece, made of excellent vintage hard rubber. From what I’ve been able to find, Bettony was a company that made woodwind instruments (Their clarinets and clarinet mouthpieces have some information online about them). This mouthpiece looks like similar era Buescher stencil mouthpieces and would likely work well on vintage altos.
No cap or ligature included.