I concur with Dwight that this gun appears to be a refinish... a nice one, but a refinish non-the-less...
I always look closely at the crispness of the machined edges on a gun to get an idea if it has ever met a buffing wheel since it left the factory...
In the areas circled in red in this enlargement of a portion of the photos in the auction, the edges IMHO look to be too "soft" in appearance to be the original polished metal finish prior to blueing... I like to see a crisp edge here where the line that runs almost the length of the receiver is "broken" by being relieved...
Here is an example with a red arrow pointing to a "crisp" line in this area:
Any other strong opinions on this?