your colt single action army was made in 1901.
1899
What is the age of a Colt rifle serial SLD25319
1906.
You will have to call Colt with the serial number to find out.
Will need a serial number from the rifle to determine the age.
What is the age of a Colt Cobra with a serial number 58472-LW
1928.
Can't be answered without the serial number.
Proofhouse.com has serial number tables for Colt.
@ 1949
The age and value of a colt .45 peacemaker serial 180356 are about 1900
Please post the serial number with your question in order to get the correct answer to what you seek.