Tuba Receiver/Shank Comparison
tuba pictured is B&S Perantucci GR-41 with Euro type reciever
Monette 94 (short) - Perantucci PT-88 (Euro) - Conn Helleberg (American)

Conn Helleberg - Monette 94 - Perantucci PT-88

Conn Helleberg - American (standard) shank

Perantucci PT-88 - European (large) shank

Monette 94  - Monette "center pitch" (short) shank