Trevor Story Signed Rockies vs Diamondbacks MLB Debut/HR Ticket BAS Slab 30796 The number in the listing title is just an inventory sku for our records and is not the authentication number. The item pictured is a stock photo unless otherwise noted. This is a Colorado Rockies vs Arizona Diamondbacks April 4, 2016 ticket stub that was personally autographed by Trevor Story with MLB Debut and 1st Career HR inscriptions. This has been slabbed by Beckett Authentication Services (BAS) and includes a certificate of authenticity from Denver Autographs.