WW2 Japanese Arisaka Sight Leaf Anti-Aircraft

This is a genuine WW2 Japanese Arisaka rifle sight leaf, specifically the anti-aircraft (AA) type. It is a short, stamped metal piece designed to attach to the rear sight base of the Arisaka series rifles, allowing soldiers to elevate the sight for firing at aircraft. Typically made of blued or parkerized steel, it features precise gradations for angle adjustment and is marked with Japanese characters or numerals indicating elevation.