The 351K was made from about 1960 to 1970.
Without a sn, unknown.
No published sn data
No such Colt model
Date of Mfg. is 1947
1922
1958
your winchester model 70 was made by winchester in 1972.
50-500 usd
Your marlin model 39A was made in 1964.
1966
No sn data down to that detail
To determine the manufacturing date of a Mossberg 702 Plinkster with the serial number EGC 266383, you would typically need to consult Mossberg's customer service or reference their serial number lookup tool, as specific date codes may not be publicly available. Mossberg often uses a combination of letters and numbers in their serial numbers to indicate the year of manufacture. If you have access to the manufacturer’s resources or forums dedicated to Mossberg firearms, they may provide more detailed information based on the serial number.