* Tokfo Kohen, on the laws of “teiku” [תיקו], and “kim lei” [קים לי] and the foundations of financial laws. Famous work by Rabbi Shabtai Katz, author of Sha”ch. Frankfurt am Oder, 1677. First edition. Especially rare book. With an introduction and a poem by the author. Rabbi Moshe Katz, the Sha”ch’s son, brought the book to print. [2] 5-90, 18 cm. Lacking one index leaf (leaf 89). * Meginei Zahav, resolutions for criticism of the Ta”z from the author of Sha”ch, by Rabbi Yoel of Shebreshin, grandson of the Ta”z. Prague, 1720. First edition. Rare book. Lacking the title page and the following leaf. As is known, the author of Sha”ch wrote the Nekudat HaKesef commentary with criticism of the Ta”z’s words. Nekudat HaKesef was printed after the Ta”z’s passing, so he could not respond. In this work, the Ta”z’s grandson defends his grandfather, and responds to the Sha”ch’s criticism. The book is called Meginei Zahav because it defends the words of the Turei Zahav. More material is included with this lot. 26 leaves, 18 cm. Lacking the title page and the following leaf. Moderate-fine condition. Owner’s signature. Aging stains. Minimal worming holes. Tears in the white margins of two leaves. Three leaves are missing (as noted above). Lacking front of binding.