To the maximum extent possible, the dates of manufacture shown were obtained from the original Winchester Factory Polishing Room serialization records; otherwise estimates were made using multiple sources of information (e.g. George Madis, Ned Schwing, etc.), in which case the data was extrapolated to the best of our ability. This information is no substitute for obtaining a Winchester Factory Letter from the Cody Firearms Museum (available for certain models and serial ranges) which in addition to the Serial Number Application Date, normally provide the original Received In Warehouse Date and Date Shipped from Winchester factory.
If you would like to obtain factory research on your Winchester, we urge you to join WACA and the Cody Firearms Museum. WACA members who are also CFM Members will receive 15 additional record searches on top of the regular quantity of searches included in the standard CFM membership package, regardless of membership level.