James Spence Authentication - JSA

Foremost autograph authentication company in the world. Enhance the value of your autographs with the industry standard, JSA Letter of Authenticity. JSA has the universal respect and approval of auctioneers, dealers, and collectors worldwide with their accurate authentication experience. Foremost autograph authentication company in the world. Enhance the value of your autographs with the industry standard, JSA Letter of Authenticity.