You are bidding on a 1994 Topps Finest blank back card of Ken Griffey, Jr.

The card front is his regular issue #232, but the back is blank.  Never saw this one on eBay before.  Not sure of the origin, but looks to be cut from a box top, possible 1/1.  1994 Finest had a wide variety of players featured on the box tops, many of them were common players.  It will be extremely difficult to find another Griffey out there.