While the info you got regarding the Officer's Model is "mostly" correct
(with yours seeming to be the Heavy Barrel Match model), THE top of the line pre war revolver from Colt was the Shooting Master, not the OM.
Based on the New Service frame, it was KING of the hill and offered IIRC in .38 Spc, .357 mag, .44 special, and .45 Colt. Truly handfitted actions, machined/checkered backstraps, and could be custom ordered with a bewildering array of barrel choices for lengths and factory fitted sights.
NOTHING wrong with the OM as it was by far, along with Smith's of various models, the true working guns of the range (bullseye was a big deal) but Shooting Master was king of the hill, as far as Colt was concerned anyway and what they charged for them. IIRC, Shooting Master was discontinued after WW2 but the OM lived on, WELL into the 1960's at least.
I have an OM similar to yours that has Kings "mirror" front sight in ivory. The ramp (which fits right over the sight projections, minus the factory blade, and is held in place with a pin and screw) has a recess that is fitted with...you guessed it...a mirror. That was to grab the light and project it back onto the ivory bead. It works and works well. My OM is from 1938 but I believe the sight was added later.
Mr. King died IIRC in 2006 or 2007 and the sell off of the store stock was something to see. Won't be many like him again but I understand his widow is still selling parts of the store stock...IF she likes you. Or so I was told when I tried to contact them several years ago. The website for King's was stll active then. Now? Don't know.