Beit Ya’akov – responsa and halachic novellae by the gaon Rabbi Ya’akov ben Shmuel, Av Beit Din of Tzoizmir. [Dyhrenfurth], 1696. Only edition. Title page with copperplate etching. Without printer’s name or place of print. Special approbation from the six rabbis of the Four Countries at the front of the book, and an additional approbation from eight of the leaders of the Four Countries. On the final eight leaves: ‘Simnei HaSefer’ and errata, which were appended to only some of the copies; the copy before us includes these leaves. Two leaves with handwritten ‘Simnei HaShu”t’ attached. Owner’s signatures of Shmuel Halberstadt(?). [2], [1], 128 [should be: 130], [8] leaves. 30 cm. Quality paper. Fine condition. Aging stains. Isolated worming perforations. Reinforcements.