The Alliance RM Signature Range mouthpieces were developed in conjunction with Richard Marshall, former Principal Cornet of Black Dyke Band.
 
Specifications:
Cup Diameter: 16.75 mm
Rim: 4.5mm
Bore: 4.6 mm
Cup: Medium - Deep
 
This mouthpiece is in almost-new condition with only very minor insertion marks on the shank. Supplied with original box and leather pouch.
 
These retail for £81 new at Prozone Music.