Can you look at my rear?

My 1968 Barracuda seems to have me rather baffled. From everything I can tell the trunk/deck lid is supposed to have an upper and lower trim piece (thin silver/pot metal) and an emblem and fishy on the passenger side.

Mine, however, comes with 8 factory holes in the center too - apparently to mount something. Anyone know what the *** of a 68 Cuda is supposed to have on it?