It is definitely not an SMS unless somebody bought it at an auction in the last 20 years, cracked it out of the TPG slab, and spent it. Google 1964 SMS (avoiding anything on YouTube) and read the Heritage Auction story behind them to understand why you won't find one in circulation Re: DD. Always check wexler's doubled die and variety vista sites to see if they have an exact match.
Anthony, your pictures are too washed out. If you are using a cell phone or a handheld camera, try turning your flash off and shooting it with natural light.