You have the "OG" Phantom, like me. All 4 nuts are silver, and all 4 prop nuts tighten in the same direction.
Self tightening props have 2 that tighten clockwise, and 2 that tighten counter-clockwise. However, if it's just the props, without nuts, they will still fit just fine. You just need to use your silver nuts to tighten them on.
Where you will run into problems is; if you want to upgrade to the DJI Vision props. Those props contain a nut built into the prop hub. And like my example above-2 of the props will not tighten.
You have 2 solutions. 1 is to purchase 2 motors-counter-clockwise tightening nuts. OR, use the generic Vision props sold on E-bay, that come without nuts.
If your Phantom has 2 silver nuts, and 2 black nuts, it's version 1.1.1, and can use the self-tightening props/nuts.
Hope that helps.
Also-there are about 4 threads right now, on using Vision props on the Phantom 1.0's.......just do a search.