HI
All the 45 Colt chambered revolvers that I have seen and that I own were as follows.
1. Triple lock 45 colt Blue 6 1/2 shipped 1910 23 made. I own this one
2. 455 2nd model 6 1/2 blue fixed sight one of 15 made in 1916. I own
this one
3. 455 2nd model 3 3/4 inch Target made in 1916 one made I own
this one
4. I have not seen any 2nd models in 45 colt.
5. I have not seen any 3rd models in 45 colt.
6. Heavy duty 38/44 chambered in 45 colt 12 made in 1937-38 for
sherriffs dept in Calf. I own one in 5 inch blue 98% all original
7. There was one Commerical 1917 in 45 Colt Nickel finish owned by
a Texas ranger.
8. There was one Pre 22 45 colt made in 1953 with a extra 45 acp
It letters that way with the original box 98 % I own this one.
9. There was one run of 200 made in the Pre Model 26 in 45 colt I own
one of these.
10. there were some 455 2nd models made for Canada in 45 Colt we
don't know how many but a couple of members of the fourm have
one of these.
I hope this helps a little
Jim Fisher