Gibson 1960 guitar and amplifier catalog. Page 23. Details of the Gibson GA-30 Invader, GA-20 Crest, GA-20T Ranger, GA-18T Explorer amplifiers
$175
$2000
$1335
$450
$700
$1500
$700
$2700
$1750
$2100
$1400
$750
$750
$900
$1500
$1999
$3995
€4574
£1595