The item is a Polish Army Adrian Helmet (Model 1915) accessory, designed for minifigures.
Military Green Polish Adrian Helmet This is a custom brick-built headgear accessory molded in military green (olive drab) plastic. It features the classic silhouette of the French-designed M1915 Adrian Helmet, recognizable by the raised comb (crest) running along the top. The defining feature of this specific model is the printed White Eagle insignia on the front. This eagle is the national coat of arms of Poland and distinguishes this helmet from French or Russian versions.
Background: After regaining independence in 1918, the newly formed Polish Army (specifically the “Blue Army” formed in France) was equipped with French gear, including these Adrian helmets. They were the standard headgear for Polish infantry and cavalry during the Polish-Soviet War (1919–1921) and the early interwar period of the Second Polish Republic. In a LEGO diorama, this helmet is essential for depicting the “Miracle at the Vistula” or early 1939 defensive units.


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