Lot of pages from a book of calculating leap years, Constantinople 1564, first edition. Rare.

Includes years from 1439 until the end of the world, by Rabbi Issachar Even-Shushan. According to the introduction written by the author for the second edition and printed by himself in Venice, 1579, the book before us originates in a manuscript that was stolen from him and printed without his permission. Sections are filled in by hand on four pages. Some of the pages are in bad condition, burnt margins in most of the pages, not bound, damage and wear. Detached pages.