This Autographed Bobby Brown Oal Baseball has been Personally Signed by Mickey Mantle & Mike Trout. This item is 100% Authentic to include a Letter of Authenticity (LOA) / hologram by JSA for the Mickey Mantle signature. The authenticity can be verified on JSA website. This item is 100% Authentic to include a numbered hologram from MLB for the Mike Trout signature. The authenticity can be verified on MLB website.