Early Keilwerth saxes are always interesting. He experimented a lot and noticeably emulated Conn. This well made instrument has rolled tone holes, art deco engraving and pearl on all the key touches. The initials 'JSK' are cleverly designed into the distinctive lower key guards to be visible from both top & side views. Engraving also mentions the name "Georges Sternberg" & says "Paris". The saxophone has good keywork with some interesting structures that appear to be tiny counter weights. The tone is smooth & mellow. Paul Desmond instantly came to mind when I slipped the vintage Selmer Soloist C* I use for test play onto this neat old horn. From the engraving design and by the old 'faux gator' rounded corner case I suspect this saxophone dates to the late 1930's