Bobby Dukoff D5 tenor saxophone mouthpiece, metal, with cap and box. - Model Name: Bobby Dukoff - Material: Metal - Size: D5 - Accessories: Cap and box Thank you for viewing. This is a Dukoff with a Miami, Florida engraving. It's a D5, but the numbering system of this era wasn't very precise, and it feels like a 7 in terms of playability. It's very easy to play and has a great Dukoff sound, but I'm selling it because I rarely use it.