While wearing the crown he took from Gehrig a season earlier their paths again crossed on the night of August 24, 1999. On a pitch from Brewer’s pitcher Brian Bohanon Mark delivered the long ball, this ONL (Coleman), that would tie him with the Iron Horse for most HR’s hit by a first baseman. It would be his 508th in total. In the bluest ink he later penned his signature on the ball’s side panel. Signature rates an 8/10. inscribed on the sweet spot with “8-24-99 HR #51”. Another landmark home run ball from Big Mac. LOA.