Yamaha YFH-631 finger buttons. When the nickel is gone it has been replaced by the silver-plate.
Yamaha OEM nickel and Pearl Valve Button, Alto Horn & Flugelhorn. AKA valve button.
Fits:
YAH-201
YFH-631
YFH-631G
YFH-635T
YFH-8315G
Fits:
YAH-201
YFH-631
YFH-631G
YFH-635T
YFH-8315G
1 each Yamaha OEM silver-plate Pearl Valve Button, Flugelhorn. AKA Finger button.
Fits:
YFH-631GS
YFH-635ST
YFH-731
YFH-8315GS
Fits:
YFH-631GS
YFH-635ST
YFH-731
YFH-8315GS