Your colt cobra dates to the year 1969.
What letter or letters does your Colt cobra have? From 1950 to 1977 the Colt cobra had letters either after or before the serial number.
What is the age of a Colt Cobra with a serial number 58472-LW
Your colt cobra was made in 1966.
That Colt cobra was made in 1976.
You will have to call Colt
colt cobra 38 special serial number 139350
Proofhouse.com has Colt sn data
If you call Colt, they will tell you.
Proofhouse.com has Colt sn data.
Colt data at Proofhouse.com
Contact Colt's and they will run a search for you.
You must call Colt to find out.