Used Parduba 8 trumpet mouthpiece

The Parduba 8 is the largest mouthpiece in the Parduba catalog. This mouthpiece features their patented "double cup" design. Condition is excellent overall with minimal signs of use.

From Parduba: 

DOUBLE-CUP MOUTHPIECES
The unusual patented design of the Parduba “Double-Cup” mouthpiece enables a great ease of playing in the high register. This is noticeable the very first time that one tries this mouthpiece. After adapting to this design, it is possible to attain excellent control, and a beautiful tone is often realized when using the larger sizes such as the numbers: 5, 6, and 7.

Although the cup appears to be very shallow, the lower half of the cup gives great length to the overall shape of this Double-Cup design which in turn produces a very brilliant yet rich melodic tone. One must be very careful not to overblow this mouthpiece since it takes much less effort to execute a tone than other types of cups.

Sizes run from the No. 1 to the No. 8, the higher numbers indicate the larger sizes. No. 7(16.89mm) cup diameter closest to a Bach No. 1 1/2(17.00mm), No. 6 (16.46mm) closest to a Bach 7(16.20mm), a No. 5(15.85mm) is closest to a Bach 10-1/2(15.90mm), and the No. 4(15.34mm) is closest to a Bach 12(15.20mm). See chart below.