autograph expert (1)

Stephen Koschal, Autograph Authenticator, most auction houses think he is the best

 

Stephen Koschal, Autograph Authenticator,

most auction houses think he’s the best…

Stephen Koschal has studied autographs for about sixty years and been a autograph dealer handling quality autographs and signed books since 1967.

As an autograph authent

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3 Replies · Reply by stephen koschal Dec 7, 2020