Navy Blue New York Yankees Baseball Cap, size 7 1/8", signed by Yankee great Mickey Mantle in blue fiber-tip marker on the inside rim of the cap. The cap is accompanied by a letter from JSA (James Spence Authentication), dated October 26, 2005 (certification number B14162). An excerpt from the Letter of Authenticity reads "The signature is consistent considering a wide range of specific qualities including slant, flow, pen pressure, letter size and formation, and other characteristics typical of our extensive database of known exemplars we have examined throughout our hobby and professional careers. It is our considered opinion that the signature item is genuine." Buy/Bid with confidence! William Hughes is a long-time Senior Advisor to the Official Overstreet Comic Book Price Guide and is also an advertiser (see pages 22, 32, 33, 148-151 in this year?s edition) who has been servicing the collecting community for over 30 years! Please also refer to Mr. Hughes? ads that run in every issue of Movie Collector?s World and Classic Images. Money Back if not completely satisfied, even on certified items! While We Offer a Refund Privilege, Please Do Not Bid Unless You Are Serious About Owning This Item! Thank You.