RARE 19th-century edition of an influential 15-century popular exposition of the principles of Judaism - Sefer ha-Ikkarim ("Book of Principles") by rabbi Joseph Albo, a student of Hasdai Crescas. 210x135mm. 234 double pages (altogether 468 pages + 4 unpaginated pages). Quarter-cloth black Hardcover. Cover, cover corners and edges worn/bumped and peeling. Spine worn. Spine rear hinge partly cracked. Spine edges bumped and tattered. Cover almost detached from binding and pages. Small ink inscriptions in front inner cover and whitepage. Inner cover, whitepages and last appendix page slightly torn near binding and somewhat stained. Title page slightly stained. Title page edges/corners slightly worn. Page 112 stained and partly loose from binding. Pages 208-234 bottom part coming loose from binding. Last page slightly torn near binding. Few pages corner creased. Text block edges dirty/slightly stained. Pages yellowing, wavy and age/water-stained. [SUMMARY]: This extremely rare edition of a classic book in Jewish theology has accumulated some damage, but is otherwise in good condition for its age.