SOLD: Kay M1B Double Bass Viol, 1964, Chicago, Illinois


Clean vintage Kay M1-B double bass viol, very original and no signs of injury. Original rosewood and tailpiece with modernized setup, plays and sounds great.


Kay Bass Viol, M1B Model, 1964 Serial Number 49205

Super clean Kay M1B (B for blonde) double bass, well maintained, no issues. The Kay M1B is a bit of a deluxe model with nicely flamed outer plys, violin corners and painted double purfling.

Very original – has had the neck set modified for projection, otherwise no signs of trauma ever. Rosewood fingerboard and nice matching Kay tailpiece. If you’re looking for a thumpy, mellow Kay – this is not the bass. This Kay is bright and rings loud – big plywood fun. You won’t find one cleaner, still a young pup at 57.

***Please note, double basses do not qualify for the website FREE SHIPPING promotion.  Please contact us for shipping, courier or pickup options prior to placing your order.

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 this Kay M1B double bass or related bass topics. Please contact UB at or call the shop at +1 (860) 535-9399. Hours of operation Tuesday through Saturday 10 am – 6 pm. The Workshop (The Barn) and showroom are located in Mystic, Connecticut conveniently between Boston and NYC.





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