1906
You will have to call Colt
check at: proofhouse.com/colt/index.html
1949
by the serial number
about 1915
about 1923
No such Colt model
You will have to call Colt with the serial number to find out.
Your colt was made in 1916.
You must call Colt to find out.
Was mfg'd in 1931.
You can find out at Proofhouse.com in the Colt tables.