Did you crop that from the internet? Try taking some photos of both obv. and rev. Not in a flip, These will help you get better answers.
You do not have a 1964 SMS coin unless you bought it at an auction. All of the 1964 SMS coins are believed to have come from the estate of mint director Eva Adams. They then were purchased by well know dealer named Lester Merkins in the early 90's and later sold through Stack's Auctions when he died. They were never released by the mint to the public.
