This information below gives a fairly accurate picture of year of manufacture for Model 70s until recent years (1992). The information below was taken from rough documents that were typed up a number of years ago and do not yet exist digitally. To obtain date of manufacture on a Model 70 made after 1992 please contact the Winchester Customer Service Department at 800-333-3288. In the event of alteration or the serial number being expunged, the BATF needs to be advised. DO NOT ship the firearm as this is a federal offense.
For a complete listing of manufacturing dates according to serial number for many other historic Winchesters of the past click this link.