A finger ring containing a small seal.
A 4th-century ring bearing a menorah found in Kaiseraugst, Switzerland (in German).
Friedenberg, Daniel M. Medieval Jewish Seals from Europe. Detroit: Wayne State University Press, 1987.
Friedenberg, Daniel M. Sasanian Jewry and Its Culture: A Lexicon of Jewish and Related Seals. Champaign, IL: University of Illinois Press, 2009.
Kuntoš, Jaroslav. “Signet Ring from Republic Square (Náměstí Republiky) in Prague.” Judaica Bohemiae, vol. XLVII, no. 2, 2012, pp. 111-14.
Mazur, Jerzy. “Jewish Seals in Late Medieval and Early Modern Poland,” Scripta Judaica Cracoviensia, vol. 7, 2009, pp. 45-55.
Shachar, Isaiah. Jewish Tradition in Art: The Feuchtwanger Collection of Judaica. 30 Mar. 1971 – 30 Mar. 1972, translated by R. Grafman, Jerusalem: Israel Museum, 1981, pp. 218-20, cat. nos. 639-40, 656-62.
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