Classic Knife | Stained was added to the game on October 18, 2019, as part of the CS20 Case, which was released alongside the "Cache and Release" update.
The blade of the knife is treated with acid to obtain gray and light yellow stains of patina. The guard and the handle remain unpainted.
Float Value of Classic Knife | Stained ranges from 0.00 to 1.00, which makes the skin available in all conditions. Scratches and abrasions do not appear on the body of the knife. At levels of wear close to the maximum, the layer of patina becomes significantly darker.
The pattern index affects the texture overlay. Special or rare variations of the pattern are absent.
The quality of Classic Knife | Stained is Covert. The skin has a StatTrak option and belongs to the "Stained" series.
Classic Knife | Stained is currently a rather popular skin, which is often seen in the game.