Gibson 1980 guitar and bass catalog. Page 52. Details of the J-50 flat-top acoustic guitar.
The list price for the Gibson J-50 flat top was $759 (1/7/80).
$3249
$1695
$6300
$2199
$8500
$4985
$1550
$4000
$4395
$4950
$3995
£1950
£8999
AU $4000