Vintage Route 66 coin display case

I lost my vintage Route 66 coin collection in a small black display case yesterday around 3pm. It’s a leather-bound binder-style album with clear sleeves and a brass corner tag that reads 'Route 66 Keepsakes'. Inside are US commemorative coins from the 1950s and a few old Mexican pesos, with a red ribbon bookmark sticking out of one sleeve. The case has a small dent on the bottom-right corner and a faint scratch along the top edge. I had left it in the Route 66 Plaza parking lot behind the Visitors Center in Kingman, Mohave County, and it means a lot to me because my grandfather started the collection, so I’m really hoping to get it back.