IMG_3180 by [url=https://www.flickr.com/photos/129235491@N05/]“[illegible] H.B. JAY & CO. / CHICAGO” on bell. Floral engraving around identification marks.
From Horn-U-Copia: “Manufactured brass instruments from 1910 to 1946. Used Columbia as a trade name. “
https://simonettitubacollection.com/ins ... t-helicon/


