Lost Sun Bowl ticket stub, white with red border

I lost my concert ticket yesterday around 3pm outside Sun Bowl Stadium on the UTEP campus in El Paso. It's a two-part stub: the top half is white with a thin red border and a blue holographic stamp in the upper right; the bottom tear-off shows 'Section A, Row 12, Seat 7' and the event date printed as May 17. It's a bit creased from being kept in my blue wallet, and there's a small coffee stain on the back. I was wearing a gray hoodie and black sneakers that day. This ticket has sentimental value--my sister surprised me with this show--and I really need it back.