Yamaha Trumpet Mellophone Mouthpieces Heavy Gold Plate 16C4 14B4 MP14F4 14E4-GP

These are all Yamaha heavy weight mouthpieces with gold plated rims. 6C4-GP is similar to a Bach 1.5C, 14B4 similar to a 3C, and 14E4 like a 3C with a deeper cup. Shank may be slightly out of round.

eBay