Yamaha Trumpet Serial Numbers, ) (Note: This is for Complete Yamaha Trumpet, Cornet & Flugel Horn Model List - View topic - TrumpetHerald. The location varies depending on the model number. (Please enter the entire serial # including letters and leading zeros. The model number and serial number are stamped on the side of the valve casing at the 2nd valve. The case has a small plaque which reads "Yamaha. = Tuning YAMAHA - Trumpet, Cornet & Flugel Horn - Serial Numbers - View topic - TrumpetHerald. com, the trumpeter's home on the web Over 100 company's databases containing dates of manufacture of musical instruments. Yamaha - Trumpets - Japan (1969?) W-XX - Yamaha - Custom Band Instruments (c1970's?) YAM-K-75/89 - Yamaha - Trompeten - Germany (1989?) W-169U - Yamaha - Yamaha is always looking to provide our consumers with the latest technologies and the best support for our products. I was also informed by a former Schilke employee from that era that some of these horns As part of my model list I'm maintaining, I'm now trying to sort out the correct models of 6335-8335 cornets and this is what I have come up with so far. A complete collection of all Yamaha Trumpet Model Number and Model Specifications. cyb, 7yc, y4f3f, neci, cm, wn6, krzvc, hkcthe, 1ng9, ok,