| C.G. Conn Flugelhorn Mouthpipe Tuning Bit/Leadpipe, Lacquer | mouthpieceexpress.com | 2206 USD | — | — |
| C.G. Conn Flugelhorn Mouthpipe Tuning Bit/Leadpipe, Silver Plated | mouthpieceexpress.com | 1951 USD | — | — |
| C.G. Conn Flugelhorn Outside Mouthpipe Tube Assembly, Lacquer | mouthpieceexpress.com | 1358 USD | — | — |
| Conn Connstellation Trombone Main Tuning Slide Assembly 48H LAST ONE | mouthpieceexpress.com | 107.99 USD | — | — |
| Conn Director Trumpet Main Tuning Slide Assembly for 16B Made Before 1985 | mouthpieceexpress.com | 79.95 USD | — | — |
| Conn Director Trumpet Mouthpipe Silver Plated for 15B & 17B Made Before 1985 | mouthpieceexpress.com | 66.99 USD | — | — |
| Conn Director Trombone Gooseneck Before 1985 | mouthpieceexpress.com | 60.99 USD | — | — |
| Conn Pre 1985 Sousaphone Top or Bottom Cap (1) | mouthpieceexpress.com | 42.99 USD | — | — |
| Conn Director Trumpet Mouthpipe for 15B & 17B Made Before 1985 | mouthpieceexpress.com | 40.99 USD | — | — |
| Conn-Selmer Small Shank Trombone Mouthpiece Extension, Silver Plated | mouthpieceexpress.com | 40.99 USD | — | — |
| Conn-Selmer Cornet to Trumpet Mouthpiece Adapter, Silver Plated | mouthpieceexpress.com | 38.99 USD | — | — |
| Conn-Selmer French Horn to Mellophone Mouthpiece Adapter, Silver Plated | mouthpieceexpress.com | 38.99 USD | — | — |
| Conn-Selmer Small Shank Trombone Mouthpiece to Large Shank Trombone Adapter, Silver Plated | mouthpieceexpress.com | 34.99 USD | — | — |
| Conn Trumpet 3rd Slide Push Rod | mouthpieceexpress.com | 24.99 USD | — | — |
| Conn-Selmer Small Shank Trombone Mouthpiece to Large Shank Trombone Adapter, 195B, Nickel Plated | mouthpieceexpress.com | 22.99 USD | — | — |
| Conn Director Trumpet Finger Button (1) for 15B & 17B Made Before 1985 | mouthpieceexpress.com | 22.99 USD | — | — |
| Conn Director Trumpet 3rd Waterkey for 16B Made Before 1985 | mouthpieceexpress.com | 22.99 USD | — | — |
| Conn Director Trumpet Finger Ring Holder for 15B & 17B Made Before 1985 | mouthpieceexpress.com | 21.99 USD | — | — |
| Conn-Selmer French Horn to Alto Horn Mouthpiece Adapter, Nickel Plated | mouthpieceexpress.com | 21.99 USD | — | — |
| Conn-Selmer French Horn to Mellophone Mouthpiece Adapter, Nickel Plated | mouthpieceexpress.com | 21.99 USD | — | — |
| Conn-Selmer Cornet to Trumpet Mouthpiece Adapter, Nickel Plated | mouthpieceexpress.com | 21.99 USD | — | — |
| Conn-Selmer Small Shank Trombone Mouthpiece to Large Shank Trombone Adapter, 195H, Nickel Plated | mouthpieceexpress.com | 21.99 USD | — | — |
| Conn Director Trumpet 3 Piece Mouthpipe to Bell Brace for 15B & 17B Made Before 1985 | mouthpieceexpress.com | 18.99 USD | — | — |
| Conn Director Trumpet Finger Hook for 15B & 17B Made Before 1985 | mouthpieceexpress.com | 16.99 USD | — | — |
| Conn Director Trumpet Finger Hook for 16B Made Before 1985 | mouthpieceexpress.com | 12.99 USD | — | — |
| Conn Director Trumpet Inside & Outside 2nd Slide Tube for 15B & 17B Made Before 1985 | mouthpieceexpress.com | 10.99 USD | — | — |
| Conn Director Trumpet Upper Inside & Outside Tuning Slide Tube for 15B & 17B Made Before 1985 | mouthpieceexpress.com | 10.99 USD | — | — |
| Conn Director Trumpet Inside & Outside 3rd Slide Tubes for 15B & 17B Made Before 1985 | mouthpieceexpress.com | 10.99 USD | — | — |
| Conn Director Trumpet Inside & Outside 1st Slide Tube for 15B & 17B Made Before 1985 | mouthpieceexpress.com | 10.99 USD | — | — |
| Conn Director Trombone Slide Lock Lug, Solders On | mouthpieceexpress.com | 9.99 USD | — | — |
| Conn/King Baritone, Marching Euphonium, & Tuba Brace Rod | mouthpieceexpress.com | 9.99 USD | — | — |
| Conn Director Trumpet 1st Slide to Bell Brace for 15B & 17B Made Before 1985 | mouthpieceexpress.com | 6.99 USD | — | — |
| Conn Trumpet/Cornet Piston Spring Set of 3 for Models Made Before 1985 | mouthpieceexpress.com | 6 USD | — | — |
| Conn/King Trumpet Pull Knob | mouthpieceexpress.com | 4.99 USD | — | — |
| Conn Director Trumpet Piston Stem (1) for 15B & 17B Made Before 1985 | mouthpieceexpress.com | 3.99 USD | — | — |
| Conn Director Trumpet Draw Knob for 15B & 17B Made Before 1985 | mouthpieceexpress.com | 3.99 USD | — | — |
| Conn Director Trumpet Waterkey Nipple for 15B & 17B Made Before 1985 | mouthpieceexpress.com | 2.99 USD | — | — |