http://remingtonsociety.com/rsa/questions/barrelcodes
Serial 718943w
The Remington Wingmaster with the serial number 2039814 was manufactured in 1980. Remington's serial number system can help date their shotguns, and this particular number falls within the range indicating production during that year.
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The Remington Wingmaster Model 870 shotgun with the serial number 1089672M was manufactured in 1972. Remington's serial number dating system indicates that this particular model was produced during that year. The "M" at the end of the serial number typically signifies a designation related to the model or production run.
The Remington 870 Wingmaster with a serial number starting with "194673V" was manufactured in 1971. The serial number indicates the year of production, as Remington used a specific format for their serial numbers during that time. If you need more precise details about its features or specifications, consulting a Remington firearms expert or reference guide could be helpful.
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The serial number SO47106V indicates that the Remington 870 Wingmaster shotgun was manufactured in the early 1970s. Specifically, Remington's serial number system suggests that this shotgun was likely produced around 1971. For the exact year, you may want to consult an official Remington reference or database that correlates serial numbers with production dates.
Go to the Remington Society of America and click the Manufactured link, it has the location and barrel codes for month/year of manufacture.
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Do a search on barrel codes, I believe that will give you an answer
Look at the date code stamp on the barrel, see related link.
Remington Society barrel code lookup: http://remingtonsociety.com/rsa/questions/barrelcodes