1966. First Edition. 274 pages. And Their Marks And Patents. Pictorial dust jacket over blue cloth with gilt lettering. Contains black and white photographic plates. Pages are bright and clear with light tanning and foxing to text block edges. Faded inscription to front free endpaper, with a few small nicks along text block edge. Occasional thumb-marking present throughout. Boards have light shelf-wear with slight corner bumping and mild crushing to spine ends. Faint tanning to spine and edges. Boards are prominently bowed. Clipped jacket has light surface wear, with small tears and creasing to spine ends, edges and corners. Lightly tanned overall, with sunning to spine.