karl reaches out to vintage-sports-cards expert peter calderon in dallas. >> i received a phone call,o into any details. on a daily basis, we receive phone calls from people who find cards. it's always reprints. >> peter tells karl to text some photos of the cards, and he'll take a look when he gets a chance. >> when i got that first picture, the first thing i thought of, "this is gonna be filed in a too-good-to-be-true folder," but they looked amazing, and i saw nothing about them that suggested they weren't real. so, i definitely -- the next plan was -- we talked about him sending me some sample of the cards. >> karl overnights eight cards to peter, with a note attached, saying, "call me before you open." when the box arrives at heritage auctions in dallas... >> i gave him a call, had him on the phone. >> and there's that moment of silence that feels like 10 minutes, but it's actually a matter of seconds. >> i opened up the box and i pulled out a large plastic holder. >> and then there's the, "oh [bleep] >> i was just floored, because i had no idea what a 100-year-old baseball card