Anchor Stone Puzzles 13 Puzzles by F. Ad. Richter comprising: Pythagoras. London, third edition; Der Kopfzerbrecher, third edition; Sphinx; Rhuig Blut; Alle Neune; Kreuzspiel, with one key booklet only (of 2); Zorn-Brecher. New York; Der Blitzableiter; Kreisrätsel; Ei des Columbus. New York; Quälgeist. New York; Grillentöter. New York; Geduldprüfer. New York, lacking box lid; all in original pictorial boxes, a little rubbing to boxes with occasional box sides lacking (13) Condition report: All puzzles complete, one puzzle lacking the second key booklet, a few boxes a little worn with some rubbing and missing sides