Family with Marin connections unveils ‘Holy Grail’ of baseball cards

• The newly discovered T206 Honus Wagner baseball card. (Photo by Mathew Salter)

• Mathew Salter's T206 Brooklyn Dodgers collected by his great-grandfather. Alas, Honus Wagner played for the Pirates. (Photo by Mathew Salter)

• Bobby Michener of Diamond Sports Cards in San Rafael poses with a facsimile of the T206 Honus Wagner card. (Photo by Steve Hermanos)

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The newly discovered T206 Honus Wagner baseball card. (Photo...