The B302F is the fretless version of the
Guild B302, which, along with the
B301 were Guilds new bass offerings for the late 1970s. Guild hadn't really came up with a innovative bass design since the low-selling
Jetstar of the mid-1960s. This is not to say they didn't make fantastic basses; far from it, but the
Starfire,
JS and
Bluesbird (M-85) basses of the late 1960s - mid 1970s could all be said to be derivatives of designs by Gibson (the EB2, EB0/3 and Les Paul bass respectively). So the B301/302 series was something new, not just in looks; it had a new design bridge and pickups too, although the actual construction (mahogany body, set mahogany neck) was traditional Guild. This bass paved the way for many new bass designs into the 1980s, some very unusual indeed. Have a listen to this bass
here.