Pluim bij een tsjapka van eerste of tweede regiment lansiers, M. 1841 c. 1841 - 1849

This is a plume, a type of feather used as an ornament, for a "tsjapka", a type of military headdress worn by lancers in the 19th century. This particular plume dates to the period between 1841 and 1849 and was likely used by a member of either the 1st or 2nd Regiment of Lancers. The plume is a single, long feather with a natural yellow color, and would have been worn as part of the uniform of a Lancer officer. The plume was an important part of the military uniform of the time, symbolizing rank and prestige.