1. The original has a print dot on Gretzky’s shoulder (see image below)
2. All of the Gretzky rookies from the first printing (there were two different printings) have two thin blue lines traversing the reverse side (lengthwise).
3. The image quality on the fakes will not have the same sharpness or resolution (measured in dots or picture elements per square inch) as the originals.
4. Original Gretzky rookies may have a rough edge because of the way they were cut. The 1979-1980 O-Pee-Chee sets were wire cut and after awhile the wire would get dull producing a rough edge. Most fakes look too perfect and may have all smooth edges.