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New York French Horn Mouthpiece cup NY-C1

The New York line of French Horn Mouthpiece cups by Osmun, has a moderate cup shape with the curve to the throat opening pushed down about as far as possible. It produces a large body of sound and is well suited for use with large bell horns with small mouth pipe venturis, like Conn 8D's. The New York line of cups are a faithful copy of the original Giardinelli C series mouthpieces. If you plan to purchase a rim with a cup from the New York line, note that only inch threaded rims are compatible. Made famous as the Giardinelli C series designed for James Chambers. Supplied in the traditional NY outer shape and original back bore and drill sizes.

The New York line specifications:

  • NY-C1 has a #1 bore 5.791mm
  • .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
  • 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 1-2 weeks delivery)


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Siegfried's Call is proud to provide you with products optimized to suit your very personal tastes and musical requirements. As a result, many items we offer online are highly customizable and made to order according to your specifications.

Special Orders

After choosing your preferred item(s), please contact us for a supplier's delivery schedule, and then special order the item after we have confirmed the estimated shipping date.

Siegfried's Call will maintain communication with our suppliers and forward that information directly to you during the waiting period.