I believe left side around trigger guard and grip area...................
Depending on markings, the miltary model would come in at 1918, while the commercial model, 1970.
about 1918
Colt 1911 styles were made by a variety of manufacturers during both World Wars. More information/markings are needed for proper identification. A guestimate based on the info provided places it as a Colt produced 1911 (not a 1911a1) produced between 1915 to 1918.
A government issue Colt 1911 .45 with that serial number would be 94 years old. It was made in 1918.
An Officer and a Gentleman - 1911 was released on: USA: 26 May 1911
Your 1911 serial number indicates your 1911 was made by Colt in 1918.
A Colt army model 1911 with that serial number would be 92 years old. Produced in 1918.
1918
made 1918
Your 1911 was made by Colt in 1918.
1918
1918