I would say in the early 60's (61-65) my Dad bought me a modle 346Ka on my 16th birthday in 1964.
Pre 1968
Model 83: 1936-1938
50-60's
your western field model m830a was made for montgomery wards by the mossberg firearms company.The mossberg model 340K is the same firearm if you go looking for parts.The mossberg model 340K was made by mossberg during the years 1958-1980.
Made in 1976. Link at bottom of page to Mossberg .22 rifle info.
The Mossberg model 183D was made from 1948-1985.These shotguns are valued at between 75-110 dollars.
Your rifle was made by the Mossberg firearms company,there model 353 is the Western field model 855a rifle.These rifles were produced by Mossberg from 1972-1985.
No published sn data.
It was made from 1936-1938.
The mossberg Model 25A was made 1936-1938. They are great little guns. I hope that this helps
The western field model 172B was made for Montgomery Wards(Western Field) by the firm Mossberg and sons.The Mossberg model 395K and your shotgun are one and the same.The Mossberg model 395K was made from 1963-1983.
No sn data to date it against