Gibson 1960 guitar and amplifier catalog. Page 17. Details of the Gibson Double 12 and Double Mandolin double-neck guitars.
This was the second catalog appearance of these custom order hollow-body doubleneck models, launched in 1958 (see the 1958 catalogue). Custom order guitars took some months to produce in the Gibson Kalamazoo custom shop. Orders for 1960 were just 7 Double-12s and 7 Double Mandolins.
At this point list prices for these models were Double Mandolin: $495; Double Twelve: $550
$11000
$12000
$13499
$54900