Blue backstage pass and concert ticket stub

I found a blue backstage pass on a matching lanyard, this afternoon around 2:15pm behind the Grand Opera House on Market Street in downtown Wilmington, Delaware. The lanyard is royal blue with white 'Live Nation' lettering, and the pass has a small holographic seal. The ticket stub is perforated, with the event date printed and a faint coffee stain near the corner. This looks like a keepsake more than a generic pass, and I’d really like to get it back to its owner if possible.