Lost rare 1950s coin collection in felt-lined display case left on a park bench at Riverside Park.

I accidentally left my collection of rare 1950s coins on a park bench at Riverside Park in Southwest VA. I got distracted while on a walk and realized minutes later that I left my favorite coins behind. I'm heartbroken as this collection has been in my family for generations. The coins are in a felt-lined display case and include some unique pieces, including the 1955 double die penny. If anyone has found it or seen anything similar, please reach out!