1928. Third Edition. 638 pages. Fully bound in black leather with gilt. German text. Pages are moderately tanned and occasionally foxed throughout. Heavy damp staining to front free end-paper. Some occasional moderate cracking to gutters throughout, binding remains reasonably firm. Heavy crack at page 607. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Mild crushing to spine ends. Leather is peeling in places and stained. Book has a slight forward lean.