100% AUTHENTIC. MEASUREMENTS ARE AS FOLLOWS: ARMPIT TO ARMPIT WIDTH IS 23" INCHES AND TOP COLLLAR TO BOTTOM SEAM IS 31" INCHES. JERSEY IS IN CRISP/CLEAN PRE-OWNED TRUE VINTAGE CONDITION. ZERO TEARS, FADING, DEFECTS, ODORS, OR STAINS! EXTREMELY LOW WEAR. NO CRACKING/PEELING! SMOKE/PET FREE HOME. SEE PHOTOS AND CLICK "ZOOM" FOR A CLOSER LOOK. CHECK OUT MY FEEDBACK AND THEN BUY WITH THE UPMOST CONFIDENCE. ITEM SHIPS WELL PROTECTED IN A POLY MAILER 1ST CLASS WITH TRACKING WITHIN 24 HOURS OR LESS AFTER PAYMENT IS MADE. THANKS FOR LOOKING! TIM