The Evolution of the Gretsch 6120 Hollow Body/Nashville
1954
Prototypes developed; introduced as Chet Atkins Hollow Body in ‘amber red’
1955
16" wide & 27/8" deep single-cut body; longhorn steer headstock inlay
1956
Horseshoe headstock inlay; plain block fretboard inlays
1957
Humped block fretboard inlays; ‘G’ logo on lower bass bout disappears
1958
Filter’Trons added; fretboard changes to ebony; ‘thumbprint’ fretboard inlays
1959
Gretsch-logo Bigsby; zero fret; bone nut
1960-’61
27/8" body depth reduced to 2½", then 2¼"; double-cut; simulated/painted f-holes; leather back pad
1964
Renamed ‘Nashville’; nameplate on headstock
1970s
Renumbered 7660 (’71); open f-holes (’73); curved tubular Bigsby arm (’75)