Check the back of the watch. If there are any engravings or imprints, be advised that this is not a real Rolex watch. The real watches have a smooth caseback without any engravings or other markings, not even a logo. Moreover, if you can see the inside of the watch because it has a clear, see-through backcase, be advised that this is also a fake. Real Rolexes do not have any versions that reveal the "inner workings" of the watch.
2 Check the materials of the watch. A real Rolex is made of either 24K gold, platinum or stainless steel. No genuine Rolex watch is ever gold-plated or made of chrome or chrome-plated. If you spot a Rolex watch that is made of chrome or is two-toned (partly gold and partly stainless steel), you can be sure that it is a fake.
Read more: How to Spot a Fake Rolex Watch | eHow.com http://www.ehow.com/how_4777375_spot-fake-rolex-watch.html#ixzz2BoJFAjJo
dont know that rolex made any that were not real gold thats why there luxury watches cause of the fine craftmanship and rich gold , but the easiest to fake to but youd still be surprised how much some of the replicas go for . if this is real its def worth alot more 10 kt , 14k 0r 18kt rolexs are very nice and go for big money . if you pull off the back that is one way to tell if its real or go have it tested by a jeweler . . if i had the creds id take the chance its still win win a very nice watch .....