1965
The only way to know is to ask him or one of his relatives.
In 1957 for 119033-C
Would need model name to answer or go to proofhouse.com .
about 1953
1952
Black Rifle II by C. Bartocci has what you are looking for
The Army model without the prefix C was made in 1944. There were none with the letter C for commercial model with that high a serial number.
there are too many numbers in the serial number of the first pistol. On the second pistol is the prefix 'CP' or just 'C' ????
value depends on overall condition. serial number will tell you the age.
John C. Colt died on 1842-11-18.
John C. Colt was born on 1810-03-01.
Your C - marked 1911 is a commercial model of the 1911 government model pistol. Your pistol was made in 1918. Value will depend of overall CONDITION. Rust, pitts, worn finish are factors to be considered relative to value. You would have to describe the condition and provide pics if you seek value.........................