If you type H03411 in the Colt Database it confirms 1974. Be sure you type a zero and not the letter O. Also, drop the A on the end (doesn't belong).
You're very welcome. That is a great gun you have! I love those 70s guns.
My only DS. don't "think" it has been shot
I got this one recently. It appears to be unfired. Manufactured in 1972.
Added this one to my birth year collection in December. 1952 DS in 32 N.P. have a Police positive in that same caliber...now if I could just find a Cobra I would have a pretty neat set all in 32 N.P.Attachment 683313