The birch sides and back were stained red. The grade of top wood was tighter grained. It was bound on the top, back, sides and around the fretboard. A flourish inlay under вЂњThe GibsonвЂќ in the headstock. Similar to an A2 except for the top color: an orange top in the teens, and a white top (refrigerator-top) in the late teens and early twenties. A2-Zs were theoretically made during the Loar period of 1921-25, but only between 19. There are also examples of A-2Zs without the вЂZвЂ™ on the lable but still sporting the black perfling line. There are a few examples of A-2Zs with black tops, though this was probably used to cover some imperfection in the selected tops.

In 1923 it appears that Gibson began to assemble A-2s with left-over blonde tops from A-3s. A-3вЂ™s had refrigerator white tops with a black perfling line, adjustable truss rods and adjustable bridges. Similar to A-2 but with snakehead headstock, blonde finish, b/w binding, and A2-Z on the label. There was a line of black inlay (or ebony layer) along the centerline of the back of the neck. The headstock face was veneered in black. It had a double ring of purfling around the soundhole, pearl dots on the fretboard, dark stained birch back and sides and вЂњThe GibsonвЂќ stamped on tailpiece cover. It had binding on front, back, soundhole and the fretboard вЂњThe GibsonвЂќ inlaid into the headstock and a better grade of spruce top. This was available in brown, black or blonde finish. вЂњThe GibsonвЂќ stamped on tailpiece cover and inlaid in headstock. Similar to A, but with double purfling on the soundhole. A (also known as the A-0)Д«rown or black finish, some binding only on the top and in the soundhole with one ring around the soundhole. It was available with a brown finish and came as a snakehead or paddle headstock. In general, higher model numbers meant more binding and ornament.

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