Personal Seal of Rabbi Naftali Amsterdam

Personal seal of Rabbi Naftali Amsterdam.
Cast brass.
Oval seal, etched on its margins: "Naftali ben M. Shlomo Amsterdam" and the inscription "Amsterdam" in Cyrillic letters. In the center are his initials in Cyrillic letters inside a small shield encircled with floral decorations.
Rabbi Naftali Amsterdam (1832-1916), a holy man, pious and humble. One of the four great disciples of Rabbi Yisrael of Salant and a leader of the Mussar Movement. Born in Salant, from his youth connected to the guidance of his close teacher Rabbi Yisrael Salanter until he became one of his foremost disciples. Together with his dear friend Rabbi Yitzchak (Itzele) Blazer Av Beit Din of Petersburg, he was one of the first ten disciples of Kollel Kovno founded by Rabbi Yisrael Salanter in 1849. In 1867, following his teacher's instructions, he went to serve as Rabbi of Helsinki, the capital city of Finland. In 1875, he returned to Kovno and taught Torah and mussar. At that time, he was among the most radiant mussar figures, whose impact was felt in all Lithuanian yeshivot. Ten years before his death in 1906, he immigrated to Jerusalem and settled in the Strauss courtyard and continued studying Torah and mussar, his great spirit influencing his surroundings.
1.5X2 cm. Good condition. Without a handle.