SOLD: Kay C1 Double Bass 1941

Kay C-1 Model Double Bass, Serial No. 7823, circa 1941

Very early Kay C1 with distinctive sunburst.


  • Upper Bout: 20.5″
  • C Bout: 15.25″
  • Lower Bout: 26.5″
  • Rib Depth: 6.75-8″
  • Length of Back: 45″
  • String Length: 41.5″
  • Neck: D
  • Weight: 21.6 Lbs




Kay C1 Double Bass 1941 serial no. 7823


The Upton Bass String Instrument Co. specializes in building award-winning custom double basses and offers accessories for the double bass. Upton Bass also services all instruments and bows of the violin family with world class restoration and repair, to view our online restoration portfolio visit

Upton Bass is ready to offer advice and answer any questions regarding double basses or related bass topics. Please contact UB at or call the shop at +1 (860) 535-9399

Hours of operation Tuesday through Saturday 10am – 6pm. The Workshop (The Barn) and showroom are located in Mystic, Connecticut conveniently between Boston and NYC.

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