The Guild Savoy X-150 was described as follows in the 1963 Guild catalog
The tone quality and design of this guitar will bring real satisfaction of ownership to the most critical player. The Savoy is a pleasure to play and a pleasure to hear . . . a truly outstanding single pick-up electric. Has Guild's fast-action neck of 3-piece Honduras mahogany with adjustable steel neck rod. Eight large pearloid position markers are inlaid in its fine rosewood fingerboard. Ivoroid-bound body, with select fine grain spruce top, is 17" wide by 21" long by 3 1/8" deep. Back and sides are of choice maple. Single Guild built-in "Frequency Tested" pick-up has separate tone and volume controls. Individual string adjustment screws allow perfect tonal balance. Equipped with nickel-plated non-slip pegs and accessories. Factory-fitted with Guild EA-610 Strings.