Parduba Cornet Mouthpiece Harry James 4.5. John Parduba started making custom mouthpieces in 1915 then opened his original shop in NYC. In the early 30’s Parduba moved to his new shop at 140 W 49th St., where in 1935 he introduced a remarkable new design in mouthpieces for brass instruments. This was the world famous “Double-Cup” which. Nice factory case included.. $925.00. Olds Mendez trumpet: Serial Number 866XX, Built in late 1952. Bright silver plated factory finish. A rare example manufactured in the LA shop. seldom seen today. 1st and 3rd trigger mechanisms. Valves have good plating and very good compression. Original case included. $1450.00.. Buy Vintage Cornets and get the best deals at the lowest prices on eBay! Great Savings & Free Delivery / Collection on many items Vintage Cornets for sale | eBay.