My son and I have been getting coin rolls from the bank for months trying to fill his coin folders, so they all know us now. Today we went and the teller said she had $30 she'd been saving for me. I'd been hoping for something like this to happen and I said I was interested. I didn't know if it would be Ike's or presidential or what. It turned out to be 29 Susan B. Anthony dollars and one presidential. My son wanted them all so I took them. Not sure what I'll do with them but there's seven different dates and mintmark combinations.
I've never been an error collector so I wouldn't know what to look for. I did notice a mintmark that looks weird though.
Now that you've made a connection with a teller, take her some treats and a list of items she can look out for. Always nice to have an "inside" person.