Rudi Gernreich Swimsuit, 1968

Not all of Rudi Gernreich's swimsuits were topless.  This one from the summer of 1968 is black wool knit with clear vinyl at the hips.  The neckline is high in the front, but low in the back.  Sold for $40 in 1968 (about $268 in today's dollar, but likely worth a whole heckuva lot more as a collectible or museum piece.....if you can find one.)