The 1968 Topps 3-D Baseball set still exerts an almost magnetic pull on collectors.  Tested in Brooklyn then seemingly abandoned due to production difficulties, examples have trickled in to the hobby over the years but there never seems to be enough supply to meet demand. This example of Willie Davis has a grade of PSA Mint 9, with an (ST) qualifier,  addressing the back of the card, which looks to have resided in an old "sticky" photo album. This "ripple' effect from the album, as seen on the back, is quite light in appearance. That aside, it's a gorgeous card, uncracked and looking sharp.