Well, a model 39 .22 implies to me that it may be a Cooey or Winchester/Cooey. The only thing is Cooey never put serial numbers on their rifles. Winchester did after they bought Cooey around WW II. So therefore I would say post 1964 for your rifle.
Somewhere between 1916-1925.
before 1955 gun under 100 in value did not need serial numbers
http://armscollectors.com/sn/windates.htm The year of manufacture for serial number 4013761 is 1974 -j.
about 1902
The first two numbers of the given serial number indicate the year the gun was manufactured. In this case, the gun was made in 1979.
Manufactured 1919.
look on top of receiver, just behind barrel and you will see manufactured date
Your Winchester Model 1890 serial number 667775 was manufactured in August of the year 1920. Bert H.
could be late 1800's to early 1900's
1914. This was a secondary brand name used by the Iver Johnson company.
1973
Your Remington model 721 was produced from 1948-1962. If you can supply the 2,or 3 letter code on the barrel we can pinpoint the month and year of production.