Over 35 Years
of Combined Experience

John Taube is the owner of J.T. Sports. With 35 years of experience, his expertise on physical attributes of game-used bats and dating have pinned him as the industry leader in professional bat authentication and grading. Teaming with hobby veteran Vince Malta and Professional Sports Authenticator (PSA) for over 20 years, J T Sports has a continuing commitment to expand the existing knowledge of game-used bats and professional player gloves. Using Malta’s labeling and dating system for professional bats, together with Taube’s expertise, the 25 step PSA authentication and grading process is recognized as the definitive standard for the authentication of professional player game used bats.

Professional model gloves are measured against criteria developed by the foremost authority on game used gloves in the country, Dennis Esken. Denny has consulted for glove manufacturers Wilson and Rawlings and is well acquainted As with game used bats, our glove resources include a sizable image database, complemented by our database of PSA authenticated professional player gloves and access to manufacturers information, highlighted by player requests customizing the glove to their specifications.