LOS ANGELES (AP) — Baseball card experts in Southern California say they have verified the legitimacy of seven identical Ty Cobb cards from the printing period of 1909 to 1911.

Before Wednesday's announcement of the recent find, there were only about 15 known to still exist. One expert says that the total worth of the whole cache should exceed $1 million.

The family who discovered the cards in a neglected paper bag at the run-down house of a deceased great-grandfather has asked to remain anonymous. Publicist Donn Pearlman, who helped announce the finding, said only that they are from a southern state and that the cards were first taken to a South Carolina dealer.