My Cart


Geyer French Horn Mouthpiece Cup Underpart

Designer: Osmun


Add a note to encourage purchase

Copy of a traditional Carl Geyer original. It shares the essential characteristics of the Osmun Chicago cup in a shallower form.
  • 650" (16.5mm) diameter at the joint where the cup and rim meet
  • inch threads are .750-36 threads, compatible with almost all American-made screw rim mouthpieces
  • metric cups are 17.5mm at the joint where the cup and rim meet (special order 1-2 weeks)
  • metric threads are .800-36, designed specifically to be interchangeable with Osmun, Paxman and Halstead-Chidell mouthpiece rims and are offered in sizes larger than the inch models
  • multiple shank choices to fit your horn perfectly. (European and Schmid special order 1-2 weeks)
  • bright silver plated cup (gold plated cups allow for up to 3 weeks delivery)

We carry a small number of Osmun Geyer cups in stock. Normally 1-2 week delivery for standard options. Please allow up to 3 weeks for special orders.

Hello You!

Join our mailing list