Ruger website, under Customer Service, Historical Data, pick rifle pistol revolver or shotgun, then your model, and date of manufacture by serial number range is shown.
No such Ruger ever made
Ruger's website has extensive sn data. But the Mark III started in 2004, and is still be produced.
Made in 1950 but it's a Ruger Mark I.
200
Ruger's web site has extensive sn data. !981
Magazine
Made in 1975.
1954. Ruger website, customer service has year of production data.
The Ruger .22 Mark I, with serial number 15-41003, was manufactured in 1970. Ruger typically produced the Mark I series from 1950 to 1982, with serial numbers providing a way to determine the year of production.
Primarily in the magazines; Mark II has a bolt hol open also
Go to Ruger's web site to find out.
160 or so