From mid-1959 until the model’s discontinuation in 1982, the ES- 355 was regularly fitted with a stereo output and a tone selector switch called a Varitone. A mono version remained available until 1970, but it was produced in smaller numbers than its stereo counterpart. This guitar is made even more unusual by its color: Sparkling Burgundy. The standard color for an ES-355—until walnut appeared in 1969—was Cherry Red. Only a few examples in other colors are known to exist. Photo and information from Dave’s Guitar Shop.