Lost 1986 Topps Roger Clemens vintage baseball card near Mount Rushmore, South Dakota.

I lost a prized vintage baseball card while hiking near Mount Rushmore in South Dakota last week. It's a 1986 Topps Roger Clemens card, and it means a lot to me since it was a gift from my grandfather. It fell out of my pocket when I took my backpack off during a break, and I didn't notice until I got home. I'm offering a reward for its return, as it's irreplaceable to me.