I see a number of things out of chronology with this Python. The only Pythons with red insert front sights, in this serial number range, were Colt Custom Shop issued models. These K prefix Custom Shop Pythons, were the first to be so fitted and are not seen very often. All that I own, and I have seen, were identified with the a yellow Custom Shop label on a wood grain style box. Notice that there is no photo of the rear sight, which should be a white outline style, if factory issued. I would guess it is not white outline. If anyone happens to have a K prefix serial numbered Python, in this range, with factory red insert, white outline sights, that is not a Custom Shop gun, it would be very informative to learn about it. I have never seen one.
The red safety disc was not used by Colt for about another 10 years or more.
I know there are some E-Nickel experts here that could tell us what they think about the finish. I am curious is they think this is possibly a refinished Python.
Lastly, I learn a lot by reviewing a seller's current and completed auctions. Anyone seriously interested in paying a substantial premium for a superposed "Factory" original Python should consider doing so.