This unique identifier, stamped on the receiver of each firearm, serves as a permanent record linking the rifle to its manufacturing date and specific configuration. Like a fingerprint, it distinguishes each Remington Model 81 Woodsmaster from all others. Locating and recording this number is the first step in researching the history of a specific rifle.
Knowing this information allows owners to verify the authenticity of their firearm, establish its approximate production date, and potentially uncover details about its past. This is crucial for collectors seeking to establish provenance and value. Further, it aids in identifying correct parts for repairs or restoration, ensuring the rifle remains true to its original design and preserving its historical integrity. In some cases, this identifier can even assist in tracing the ownership history of a particular firearm.