Early 1950's
Sears, the 583.19 has a roll mark date of 11/28/49. Sears has a safety recall on this specific model shotgun you should be aware of before firing.
your Winchester model 12 shotgun was made by Winchester in 1959.
what is the manufacture date of a model 59 winchester 12 gauge shotgun with serial number 262XX
Early 1960's. There will be a two upper case letter assembly date code on the barrel. http://www.histandard.info/PDF/Sears%20Shotguns.pdf
The information your looking for can be found on the High Standard Collectors Association web page under links or GOOGLE "john stimsons high standard data",hope this helps
The following link will give a general ides but I wouild need the assembly date code from the barrel to provide the month and year. http://www.histandard.info/PDF/Sears%20Shotguns.pdf
Your Winchester model 1897 shotgun was made by Winchester in 1910.
The Marlin model 24 shotgun was produced by Marlin from 1908-1915.
Which Model?
56-58
your shotgun was made in 1906