This is an Imperial Russia postage stamp, denominated 25 kopecks, featuring the double-headed eagle coat of arms, a powerful symbol of the Russian Empire. Issued during the late 19th to early 20th century, it showcases a bi-color design with a dark oval center framed in green, bordered by intricate scrollwork and crowned with the Imperial crown. The inscription reads "Почтовая марка" (Postage Stamp) and "Двадцать пять коп." (Twenty-five kopecks). Stamps of this series are highly sought after by philatelists due to their historical connection to the final decades of the Russian Empire. A fine piece for any collection specializing in Imperial Russia, heraldry, or classic European issues.