Even HaEzer – Sefer Ra’avan, halachic rulings in Talmudic order by Rabbi Eliezer ben Natan MiBa’alei HaTosafot. This is the first edition, printed after almost 500 years, with interesting and important approbations from rabbinic leaders of that generation: the author of the Levushim; the Maharsh”a; the author of Kli Yakar; Rabbi Yitzchak HaKohen, son-in-law of the Mahara”l of Prague; and more. Title page illustrated with interesting angelic figures. The name “Mordechai HaKohen Katz,” paternal grandfather of the printer, Moshe Katz, is printed inside the border of the title page, on top of an illustration of a Kohen’s hands raised in blessing. Owners’ signatures and notations from the time of printing on the title page. Correct and interesting bibliographic notation on the back of the title page, also in ancient script. Several glosses among the book’s leaves from various periods. Rabbi Eliezer ben Natan [c. 1090-1170] was one of the first of the Ba’alei HaTosafot in Magentza (Mainz), Germany. Many of the Ba’alei HaTosafot and the Earlier Authorities were in his family and among his descendants, including the Ro”sh. The Rhineland massacres took place during his time, and he composed lamentations and selichot about them. 154 leaves. 28 cm. Signatures: Rabbi Chaim David Teveli Mitlianski of Shumiatch, and Rabbi Yehudah Gershoni. Fine condition. Aging stains. Professional restoration of the title page, with damage to individual words on the back of the title page. Leaves 3 and 5 are not bound in the correct places. Simple binding.