I want to be clear about this. I love the acetate cards that you can see through. Here are nine different ones from my collection.
1993 Classic Four Sport Acetates #9 Alex Rodriguez (This is the first acetate card I ever acquired. I pulled it out of a dollar box at a card show. It originally was an insert in 1993 Classic Four Sport foil packs.)
1995 Stadium Club Clear Cut #CC12 Kirby Puckett (Cards from this set were inserted one in every 24 packs of hobby and retail Stadium Club.)
1996 Clear Assets #52 Barry Bonds (This is from a 70-card multi-sport set.)
1996 Pinnacle Essence of the Game #7 Ken Griffey Jr. (This insert set utilized a micro-etched print technology to display color player cutouts on acetate cards studded with stars.)
1996 Studio Stained Glass Stars #4 Greg Maddux (These inserts featured color player images on a genuine-look stained glass background and were printed with a clear plastic, die-cut technology. Reminds me of church.)
1997 Ultra Home Run Kings #8 Mike Piazza (Cards from this 12-card set were seeded one in every 36 packs of series one hobby and features ultra crystal cards with transparent refractive holo-foil technology.)
1999 Finest Peel and Reveal Hyperplaid #5 Nomar Garciaparra (Along with Sparkle and Stadium Stars, this rather uncommon Hyperplaid was one of three Peel and Reveal inserts found one in every 60 packs. You had to peel off a protective coating to see which version you got. This card does have a light sparkly plaid design in the background that just won't show in this scan.)
2008 Stadium Club Beam Team Autographs Black and White #JP Jonathan Papelbon (I think Papelbon was an idiot. He certainly couldn't write his own name. However this is a pretty cool-looking card. The non-black and white cards, of which this is a parallel of, are colorful and look like the stained glass cards.)
2014 Topps High Tek Spiral Bricks Disco Diffractor 50 #HTTGW Tony Gwynn (In recent years Topps has resurrected the Topps Tek brand that was first introduced in the late 1990s. This Gwynn card is serial numbered to 50.)