Hi, MHarrisIV,
Please read the last line of my earlier post. The New Army grip had a circle with the word "COLT" at the top in an arc and a rampant colt underneath. The early guns had the date "1892" below the pony, but that was dropped on the later models. The New Navy had the word "COLT" in elongated letters as shown on andrewstorm's gun. I think it would be more accurate to say "civilian versions of the Model 1892" but even that might not be truly accurate. The problem is that the Army and Navy did use the "Model year" system but Colt really didn't. So a civilian gun made in, say, 1892, and just like the Army Model 1892, would be a "New Army". But a civilian gun made in 1903, with all the upgrades of the Army Model 1903, would still be the "New Army".
FWIW, most of the Colt model dates so beloved of collectors, like "1851 Navy' or "Model 1908 pocket model", were never used by Colt; they were adopted by collectors so they could know which "pocket model" or "new model" was being discussed.
I don't have a breakdown on the calibers of those revolvers, and I am not sure there is one, short of delving into the Colt records. As to the upgrade, I doubt if any civilian revolvers were upgraded unless an owner sent his gun into Colt with a request that it be done. In the Navy, they knew where the guns were and there was a mechanism for them to be called in and upgraded. No such system existed in the civilian world (they didn't do factory recalls in those days).
I did make an error in the previous post. I said that all the government contract guns had wood grips; that is not true, as some Navy models had hard rubber grips with the elongated COLT on them.
Jim
Jim