Two Lancaster concert tickets with red heart sticker

I lost my two Lancaster concert tickets yesterday around 3pm. They’re two glossy general-admission tickets for a local show at the City Auditorium here in Lancaster. They’re white with bold black text and each has a small red heart sticker on the back. The seat numbers are A12 and A13, and one corner is creased from a coffee spill on the envelope. I was standing near the Lancaster Central Market on North Market Street, by the Market Street entrance when I last saw them. This means a lot to me because my sister bought them as a gift for our trip, and I really need them back.