Group Lot AZ D-Backs Opening Day Cachets

Updated October 19, 2026

Great investor opportunity to own a bulk grouping of Official Commemorative Cachet envelopes celebrating the Arizona Diamondback’s very first MLB game on March 31, 1998. These officially licensed Limited Collector’s Edition pieces were produced by CEO Sports in partnership with the MLB. Every individual piece features the striking metallic foil Diamondbacks “A” Opening Day logo alongside the match-up logos for both the D-Backs and the Colorado Rockies. Each contain an officially cancelled U.S. postage stamp with the historic, “Bank One Ballpark Station” snake postmark stamp. The back of each envelope is cleanly designated with the gold foil “Official Commemorative Cachet” and “CEO Sports/MLB 1998” branding. Every single copy in this collection comes individually pre-housed and protected inside its own rigid clear plastic top loader sleeve, keeping the entire inventory in pristine condition with sharp corners and clean surfaces. This is an exception inventory lot perfect for card shop owners, sports memorabilia dealers, or fans in general looking to break down a large quantity of inaugural season desert baseball history for possible individual sale. View our full catalog of quality items up for auction at: POGAuctions.com Tag Words: MLB, Arizona Diamondbacks, Inaugural Season, Opening Day 1998, CEO Sports, First Day Cover, Bank One Ballpark, BOB, Postmarked Stamp, D-Backs Baseball, Wholesale Lot, Reseller Inventory, Dealer Lot ZC640 BWB

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