With the K serial number prefix I got no production date info.
I lopped the K off and it came up 1961 Python.
Regardless, seems to be a very nice revolver.
I'm guessing it's unlike other handguns and vintage doubles, a guy only needs 1. Right?
Check out the DOB sticky at the top of the page. It indicates the K prefix is a 80's gun so your stocks are correct.
With respect to needing only one, most if not all of us here have a incurable disease that results in the spending of all disposal income for Colts. You can never only have one!!
Now that you have a blue 6" Python, you will need a 4", but two is not enough so next you will need a 2 1/2" snubbie Python. Of course the next step is to acquire a 8" and to finalize the collection the always difficult to find 3".
Then after the blue collection is complete you will need to start on the nickel collection to be followed by the stainless...