This is the new 69D2 from Yamaha's standard series of Tuba mouthpieces. There is no gold-plated option from the manufacturer, so I purchased a new silver-plated version and had it gold-plated immediately after it arrived. ◆ Mouthpiece body: 10,340 yen (list price) Gold plating cost approximately 35,000 yen. Yamaha mouthpieces are of excellent quality and offer great value even in their silver-plated state, but the gold plating improves the feel of the rim and gives the tone a more brilliant impression. There are some insertion scratches on the shank, but no dents or impact marks. I had it gold-plated, but I ended up using a Euro shank instrument, and although I considered making a conversion adapter, I gave up on using it... The price of gold is constantly rising, so please consider purchasing this highly-rated mouthpiece, recommended for everyone from beginners to professionals. The following product specifications are extracted from the Yamaha HP: ・Rim inner diameter: 32.86 (mm) ・Throat diameter: 8.00 (mm) ◆ It has a funnel-shaped inner diameter with a gentle curve and a deep cup, which is characterized by a symphonic sound. The thin rim and not-too-thick throat make it easy to control even on large tubas, and the lightweight design makes it an efficient and responsive mouthpiece.