What is age of a 870 wingmaster serial so47106v?

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.