1960's HOFNER FLATTOP 12-STRING  ACOUSTIC GUITAR WITH SLOTTED HEADSTOCK

ELECTRIC MODEL, COURTESY OF RON MELLOR, CHESHIRE, UK:

Note: The scratchplate, truss rod cover, and plastic Hofner headstock logo are missing off this guitar. The control knobs are probably not the originals.

ACOUSTIC MODEL, COURTESY OF TIMOTHY BURGESS, BOSTON, MASACHUSETTS, USA