1912. No Edition Remarks. 500 pages. No dust jacket. This is an ex-Library book. Half bound leather with green cloth covered boards. Text is in German. Black and white diagrams. Expected library inserts, stamps and inscriptions. Binding remains firm. Pages are moderately tanned. Red speckles to text block edges. Noticeable tanning to text block edges. Thumb-marking throughout. Text is unaffected. Boards have heavy edge-wear with substantial bumping to corners, crushing to spine ends and rub wear all over.Leather has moderate peeling to spine. Scuffing to leather corners.