This beach is not sand but shingle. I noticed a long cut which I have tried to show in pic. Half my finds came from this area. That red thing in the pic is my home made sand scoop made from a plastic petrol can, does the job excellent on this shingle beach.
In amongst that lot is the button pictured below. I find it very interesting as it says "GREAT SEAL OF THE STATE OF OKLAHOMA 1907". It seems to be made of lead or maybe pewter and is surrounded I think with Bakelite. A nice button.