Gibson 1975 Custom Order & Electric Acoustics catalogue. Page 6. Left hand side of a two page spread on Gibson archtop acoustics. Details of two instruments: the Gibson L-5C and Super 400C. These are acoustic equivalents to the L-5CES and Super-400CES as seen on page 10 and 12.
1975 prices for these guitars were as follows (US zone 1): L-5C $1080, rising to $1099 by the end of the year (1/11/1975). Super-400C $1235.
$495
$495
$6425
$12995
$8800
$13900
$4999
€15000
€12500