Found this at the beach today. It's the same size as a sba with elizabeth II on the obverse. I could only make our an R and an A on the reverse (not in that order).
My guess is the Canadian $1. There is evidence of 11 sides on the interior rim. This feature is also common to the SBA but I suppose that you can tell the difference between Queen Elizabeth and Susan Anthony.
Just compared the coin to a $1 canadian and i can make out the duck on the back of my coin. Thanks for your help.
