Geyer French Horn Mouthpiece Cup Underpart
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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
- US standard shank
- bright silver plated cup only
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