One thing to remember is if you think you have a DDO and a DDR, 99.9% of the time you don't. That combination is pretty rare. More than likely you have nether. It's usually DDD, split plate doubling, MD, or lighting.
Just a note Herestohoping, When you think you have a doubled die, you need to check all three reference sites before posting here on CCF. Then when you post here add what attribution number you think it might be. John1
( I'm no pro, it's just my humble opinion ) Searched 6.5 +/- Million Cents Since 1971