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. Hall of Famer Tony Perez's featured here, graded MINT 9 by PSA, with just one single example graded higher.  Bright and clean with an attractive image, the cards nearly perfect, a tiny print speck in the lower border reducing its chances for a GEM MINT grade.