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Valued among collectors, the headstocks from 1957-1960 featured a reverse painted plastic overlay similar to the Kelvinator logo. It was difficult to get players to take Kay’s high end entry seriously, and Kay discontinued the Gold line in 1962.In 1937, Kay began to produce a 3/4 size upright bass, which is widely believed to be their Concert or C-1 bass.In 1965 Katz sold Kay to Seeburg Corporation, and he became the head of Seeburg's musical instrument division.
Kay used this type of pickups on various Kay electrics dating back to the 1940s.
These pickups appeared on Kay instruments through the late 1960s and are sometimes called “Kessel” or “Kleenex Box” pickups.
The Jazz Special Bass has a single blade pickup as used on the K-161 and K-162 (tilted slightly towards the neck at the treble side), as well as a distinctive, oversized headstock.
The assets of Kay/Valco were auctioned off in 1969.
The upright bass and cello lines were sold to Engelhardt-Link, a new company formed by a previous Valco member, which has continued production (see #Kay basses for details).