1891. IMHO, worth spending the money to get it lettered by Colt.
Proofhouse.com has Colt sn data.
You will have to call Colt and provide the sn.
No
Proofhouse.com has Colt sn data.
That Colt frontier Bisley with sn 282698 was produced in 1906.
1890
1879
Proofhouse.com has Colt sn data.
Proofhouse.com has Colt sn data.
Proofhouse.com has Colt sn data
If that is a Colt frontier scout with a suffix F after the serial number, it was made in 1962.