Most if not all of these photos are most likely Lynch Road assembled car trunk lids, make of it what you think the "X" means, times as in multiplication, by as in 70 by 15", black as in black sidewall or black wheel color OR the start of an assembly worker playing Tic, Tac, Toe and no one else wanting to play? wink

Trunk  70 X my Y4 RR and R4 Bee LG.jpgTrunk  SHX ALL 3.jpgTrunk 70 X and G70 X15 RED all 3.jpgTrunk lid A12 0002.jpg