Winchester Model 21 side-by-side shotgun chambered in 12 gauge with a 25-inch barrel and two-round capacity. This firearm dates to approximately 1934, placing it within the early production period of the Model 21 series. The design features a break-action configuration typical of Winchester’s double guns of the era, with twin barrels aligned horizontally and a solid steel receiver. The Model 21 was manufactured in New Haven, Connecticut, and is known for its robust construction and precise barrel regulation.