Please rephrase the question with the appropriate model designation. There is no "Mark You" model made by Ruger. You could be referring to the Mk. I, II, or III pistols, or the Mk. I rifle.
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Agree. If you go to the Ruger website, under Customer Service, select historical data, your TYPE of firearm, then the model, there is a list of serial number ranges by year. But no model you.
Ruger has sn data on their web site.
Ruger's website has a sn function.
1964
Made in 1950 but it's a Ruger Mark I.
Ruger's website has sn tables that will answer your question.
If the Ruger website is working, it has sn data on it.
Ruger's website has sn tables that will answer your question.
1965
It was manufactured in 1961.
50-200
Made in 1975.
Ruger will tell you if you phone customer service.