This object is an antique Victorian or Edwardian glass hip flask featuring a textured leather-bound upper body and a removable silver or silver-plated drinking cup. [1, 2, 3]Key Identification FeaturesMaterials: The flask is made of a glass inner bottle, the top half is covered in dark textured leather (often pigskin, morocco, or crocodile leather), and the bottom half is a friction-fit metal cup. [1, 2, 3, 4]Sight Window: The vertical oval slot cut into the leather on the front allows the user to see the liquid level inside the glass bottle. [1, 2]Bayonet Cap: The top typically uses a twist-and-lock "bayonet" or screw mechanism with a cork lining inside to prevent leaks. [1, 2]Monogram: The front of the removable cup features an intricate, engraved decorative monogram. [1]Hallmarks: The stamps visible on the very bottom of the cup indicate its maker, material purity (such as sterling silver or electroplated nickel silver), and the city/year of manufacture

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