This is a Bach "18" tuba mouthpiece. It is silver-plated. The CORP. engraving has the dot inside the "P," and the engraving is generally angular, indicating early Elkhart production (likely from the 1960s). I understand it was made with the same metal, specifications, and equipment as the Mount Vernon period. The condition shows almost no signs of use, with only very slight scratches from shipping or manufacturing. It's like new, a beautiful item from a long-term inventory at a musical instrument store. The original box is included, although it has some damage. Please refer to the photos. I am also listing trumpet mouthpieces, but all listings will end by the end of March (the end date may vary slightly). There are no plans to relist them after that. Thank you for your time, even if it's brief. * Shipping will be via Mercari. * No price reductions. ☆ I will try my best to accommodate combined purchase requests.