Excluding the Rolex Quartz movements, genuine Rolex seconds hand "ticks" at a rate of six to eight times per second, looking at it move it looks like it sweeps. The seconds hand appears to move almost continuously. If you look at the second hand with a loupe very closely you'll see that it actually moves in very small but discrete increments. Did you buy the watch?
I would like to thank you all for your valuable information. Here are some tips to find fake Rolexs.
1.Check if the watch you are being offered even exists. Many fakes are of watches that Rolex does not even make! Go to Rolex’s website for their line of currently produced models. They have in depth pictures that can be very helpful in determining their real ones from a fake one being offered. You can sometimes find information on discontinued models in older literature, but in those cases check the movement.
2.If the watch is stopped you should be able to move it in a few clockwise circular movements and it will run. Rolex’s automatic movement is reliable and should not be broken. If it refuses to run I would not buy it.
3.The second hand should sweep smoothly, not tick or have any other mannerisms. Any other motion by the second hand is quartz movement and a fake (with the exception of Rolex’s Oysterquartz models).
4.A second hand that appears to float or sweep smoothly could still be a fake. An authentic Rolex second hand will move about 5-6 times per second giving it the sweeping motion. Does the watch give a ticking sound or is it jumpy and random in its sweeping second hand motion? If so, then it is most certainly a fake. Some older models may have a noticeable 5 ticks a second, but it will be consistent, never jerky or random.
5.Listen to the ticking. It should be almost inaudible with a very fast beat. Slow ticking is a sure sign of a fake.