A little update on the Alberta Python. I've communicated with Paul at the Colt Archives a number of times, and his take on it was that each Provincial gun in series was unique...but he couldn't come up with the paperwork to substantiate the claim as it is currently not where it is supposed to be. He is still looking.
However! He recommended I buy a particular book which references the series, so I did. It further substantiates that the Alberta gun is a unique, one off gun in the series. That book is the best $120 I have spent recently!