about 1921
You can find out at Proofhouse.com in the Colt tables.
You must call Colt to find out.
1918
if it"s model 1908 hammerless then made about 1921
Go to: www. proofhouse.com with serial number.
1918
1934 for the Colt 1903 hammerless .32.
You will have to call Colt to find out.
You will have to call Colt
It tells the year of manufacture of a Colt.
Around 1919 for the Colt 1903 hammerless .32
Made in 1916, if 1903 hammerless .32