I have a Parke cup Bergeron model, .615 bronze, with Warburton threads,
and also the Parke Bergeron Rim 615 with Bach Threads.
gold plating is very good, threads and rim are in very good conditions
.These mouthpieces are no longer made and this one is a custom due to the 2 piece rim/cup.
All Offers welcome
Free postage if bought at the Buy It Now Price.