If you are referring to a Ruger, go to their website, look under customer service.
You did not provide a serial number.
1964
1965
It was manufactured in 1961.
Ruger has sn data on their web site.
Ruger's website has a sn function.
If the Ruger website is working, it has sn data on it.
You will have to call Colt
Blue Book of Gun Values
You need to call Colt
The rifle is a Mark II BAR Safari, manufactured in 1995.
Try proofhouse.com.