While on the subject of Colt's Python serial numbers.
I have long since held the belief that many of our older, long-lived American companies had no inkling; the interest, curiosity, scrutiny, and attention to the smallest detail, their products would someday be subjected to.
Colt's serial numbers for instance. They were merely a factory control system, never meant to mean anything to the end user except as a bookkeeping aid. . Only in the later years of firearm identification was it even considered necessary for law enforcement.
Even now, there is little to prove that a gun's serial number is any way, a deterrent to crime.
It only connects a gun to the last legal buyer.... But, that's outside my lane.
There are several many Colt's serial numbers you can punch into Colt's site for reading numbers; that will bring up as many as 6 or 7 different models with the same numbers.
I'm not criticizing Colt at all.
I can't imagine the old management at Colt would have dreamed how highly revered some of their models would become. Certainly it's doubtful the little items like the finish of grip screws, sight retention pins, which way the "Rampant Colt's" tail is swishing, and all those little things we try to learn, would not have been taken into account.
In a nut-shell, I do not think old timers at Colt's would have thought a six-shooter would be hailed by many as a true work of art on the one hand, and the finest of working tools on the other.