Coin guys, have a question for you.
Before I got burglarized, I had the coin hobby. There are a few dimes that are worth a couple hundred thousand dollars. You need to check them out.
4000 would be very difficult to sort, but over a hundr d of those dimes might be worth $5 or more.
I would take it slow, view it as treasure hunting, maybe sort 20 or so at a time. Look online for collectors in a forum like ours.
I hope you strike it rich!