check out www.savage99.com
Contact Savage Customer Service through their website.
You may find the date of manufacture by going to savage99.com This should give you the info that you seek.
Your Savage was made in the year 1937 if you have a model 99 lever action rifle.
If we are talking about a Savage model 99 rifle,chambered in 300 Sav. caliber,then your lever action rifle was produced in the year 1949 by Savage arms Company.
The Model 101s were manufactured from 1960 to 1968. Read more: I have a pistol says model 101-22 cal.lr Savage arms corp - JustAnswer http://www.justanswer.com/firearms/55oem-pistol-says-model-101-22-cal-lr-savage-arms-corp.html#ixzz2C9GFDwY3
after ww2
You should contact Savage arms directly,they should identify the year of manufacture for your rifle.
The Springfield Savage Arms .410 Model 37B was produced from the late 1950s to the early 1970s. To determine the specific age of an individual firearm, you would need to check the serial number, as Savage Arms often used serial numbers to date their products. If you have a specific serial number, you can consult resources or guides on Savage Arms firearms to find the exact year of manufacture.
Savage Arms was created in 1894.
Riverside Arms was a name used by J, Stevens Arms and Tool Co (which became part of Savage Firearms) between 1915 and 1940. There are no public records for dates of manufacture.
The Savage Arms Springfield Model 174 was produced in the late 1950s to early 1960s. The specific serial number you provided, SERA983373, does not provide enough information to pinpoint an exact year of manufacture. However, for a more accurate determination, you may want to consult Savage Arms' production records or a firearms expert.