Good luck to you. I was at my dump bank one day, when an elderly man asked the teller at another window, if he could have a bank bag. He said he had a shoe box full of old coins that he wanted to bring in and cash. "Indian nickels and half dimes" and other old coins. She told him that the bank didn't give the bags out. I introduced myself to the man and told him that I could give him a lot more for his coins than the bank would. I gave him my phone number. After about 10 days I went to his home to talk to him again and he said that he still had my number and would call me when he was ready to sell them. That was last September and I haven't heard from him yet.
I hope you have better luck. Dave