The Smith & Wesson Model 29-2 with an 8 3/8-inch barrel is the iconic ".44 Magnum" handgun famously associated with Clint Eastwood's "Dirty Harry" character, though the actual movie gun had a shorter 6.5-inch barrel, with the long barrel used for publicity; it's a large, powerful revolver from the N-Frame series, known for its deep blued finish, checkered target grips, and collectible status, especially the earlier pinned and recessed versions. 
Key Characteristics:
Model: Smith & Wesson Model 29-2 (a variation of the original Model 29).
Caliber: .44 Magnum.
Barrel Length: 8 3/8 inches (often referred to as the "long barrel" or "Dirty Harry" length for advertising).
Features: Typically includes a solid rib, checkered walnut target grips, target hammer, and target trigger (the "three Ts").
Production: The 29-2 model was produced from the early 1970s into the 1980s (e.g., 1970-1983), with specific examples from 1980.
Iconic Status: Made famous by the movie Dirty Harry, leading to a massive surge in sales and cementing its legendary status as a powerful handgun
Firearm is in great condition with "blueing" still in tact!  29-2 with pinned receiver and recessed cylinder!