"In late 1966, Rickenbacker began production of the рconvertibleс 12-string guitar. The converter mechanism consisted of a modified pickguard assembly, a sliding metal comb, and a hinged arm held in place by a metal bracket and large hold-down screw. The convertible 12-string would allow the player, with a single movement of the six-pronged retaining comb, to pull down and retain the octave strings below the picking area, thus enabling a switch from 12- to 6-string guitar (and back) without having to change guitars. The convertible models were designated with a р6с in the third digitяso the 360-12 was known as the 366-12, the 330-12 was the 336-12, and even the modest solidbody 450-12, when endowed with a converter, became the 456-12. This example has a rare Moonglo (dark cherry burst) finish."