- Designation: Known as the ".357 Magnum" (before it was designated the Model 27 in 1957).
- Frame: Large N-frame, ideal for managing .357 Magnum recoil.
- Features: Pinned barrel and recessed chambers (cylinder).
- Barrel Lengths: Common lengths included 3.5, 5, 6, and 8-3/8 inches. The 3.5-inch barrel was popular for concealed carry, often referred to as the "FBI dream gun".
- Finish: High-polish blue or nickel plating.
- Sights: Usually equipped with a red ramp or Baughman quick-draw front sight and micrometer click adjustable rear sight.
- Collectibility: Highly sought after due to superior hand-fitting, quality control, and pre-Model 27 numbering.
- Post-War Production: After WWII, production of high-end revolvers resumed slowly in the late 1940s/early 1950s.
- Significance: These were considered the finest man-stopper revolvers available at the time, bridging the gap between pre-war Registered Magnums and the later Model 27.
- Serial Numbering: In 1951, the guns would feature "S" prefix serial numbers (e.g., S151913).
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