Great piece of baseball history in Mariano Rivera's All-Time Record #652 final career save game used base, which comes with MLB Cert. Standard MLB base is from the game between the New York Yankees and Toronto Blue Jays on September 17, 2013; MLB Authentication notes that this was the first base bag used from the 1st through 5th innings. Shows great use with dirt and spike marks, Blue Jays logo on all four sides, comes with two MLB hologram numbers - EK815324 and EK815279 - indicating that this was used on both September 17th and 18th. Rivera's save came on 9/17, in a 4-3 victory.