68 Barracuda trunk lid medallion

Classic Industries sells the Barracuda in the circle emblem for the rear trunk lid. My 68 never had one atop the deck lid. I googled images and turned up some 68s with and most without the emblem. Is this a hit and miss option, something its supposed to have, or maybe only for the Formula S? Thanks

Misprint or wrong information.

The circle "S" was on only on 1969 rear trunks and it was applied to the 69 only one piece trunk trim.

In 67 and 68 it was just on both front fenders.