Not sure what you mean with "missing 2 small waves..."
It appears to be original to me although is missing the engraving of the Omega Globe Design, but this would not be an indication that this one is a fake as Omega started using this particular engraving after Sep 2003. You may want to ask the Seller for its serial number for a cross reference.
Here's a picture of the Omega Globe Design on my 2254.50
Also, most of the 2254s I have seen have the "Speedy" style bracelet unlike the one you are pointing to that has the "Bond" style...
Click to expand...