If you mean the standard Caliber of a 1911 model colt pistol,then this was chambered in the caliber .45ACP.
45 ACP
your colt model 1911 was made by colt in 1913.
With the serial number that you have provided,your Colt Model 1911 was made by Colt in the year 1918.
if you are referring to the model 1911 Colt pistol with serial number 444810, then it was made by Colt in 1918........................
That Colt model 1911 was a commercial model, not a government model and based on the serial number, it was made in 1947.
The Colt 1911 government model with that serial number was made in 1919,
not much. the 1911 was made for the military. The 70 was a later commercial model of the 1911
Which model?
made by Colt about 1916
You must call Colt
Your colt model 1911 commercial (that is what the C stands for ahead of the serial number) was made by colt in 1917.
Your Colt model of 1911 dates to the year 1918,with the serial number that you have supplied.