I would say that your Colt Thunderer in .41 colt caliber was made in the year 1880-1881,with the serial number provided.
1903
Proofhouse.com has Colt sn data.
Model 1877 thunderer .41 with that serial number was made around 1890.
not aware of any DA colt 41's made in 1834 ?????
Please include the model name or number to get the answer you are looking for.
You need to find a copy of The Book of Colt Firearms.
If your colt is the thunderer model (you do not say) then it was made in 1902.
made about 1883
Based on the serial number, your Colt DA .41 would be 103 years old. It was made in 1903.
made about 1897
Made in 1901.
Made in 1902.