Conn BB flat helicon


Tag #: 01044
Serial #: 153893

Year Key Valve
1917 BBb 3 Piston


“MADE BY / C.G. CONN LTD. / U.S.O.M.C.” on bell. Floral engraving around identification marks. *No longer in collection – Returned to original owner in 2011, in exchange for TE#201103.

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