Ruger's web site has sn data.
It appears that you have a Ruger Mk I, manufactured in 1978.
Ruger's web site has sn data.
Ruger's website has a sn look up area.
It was manufactured in 1982.
It was manufactured in 1961.
It would seem that you have a P95PR manufactured either in 2010 or 2011. 317-63391 and above were the 2011 production pistols.
The RUGER Model 10/22 with serial number 110995 was manufactured in 1970. Ruger began using a serial number system for the 10/22 in the late 1960s, and this specific serial number places it in that timeframe.
You will have to call Ruger. You can get the phone number from their web site.
The Ruger Mark I was produced from 1950 to 1981, and serial number 15095 suggests it was manufactured in the early 1950s. Specifically, based on Ruger's serial number records, this firearm is likely from 1952. For a definitive year, it's best to consult Ruger’s factory records or a detailed reference guide on Ruger firearms.
You have a .44 Magnum Ruger Super Blackhawk, manufactured in 1978. If you had a question of a different nature, you'll have to clarify.
To determine the age of a Ruger Single Six with the serial number 61-10765, you can refer to Ruger's serial number records. Based on those records, this particular model was manufactured in the year 1961. Therefore, as of 2023, the Ruger Single Six would be 62 years old.