Remember those little cards that came in a plastic frame in 1989? One side had a replica of the Topps Rookie card, the other side the current year card. The 1989 Double Headers was common, but the Mets/Yankees test issue is very hard to find (I'm lucky enough to have a set). The Mattingly books $100, Henderson $80 and the commons $10.
Turns out there is a 1988 set of Mets/Yankees.
http://www.ebay.com/itm/1988-Topps-...1?pt=US_Baseball&hash=item1c3844a009#viTabs_0
Wow!
Turns out there is a 1988 set of Mets/Yankees.
http://www.ebay.com/itm/1988-Topps-...1?pt=US_Baseball&hash=item1c3844a009#viTabs_0
Wow!