"Herbert Knotel's German Armies in Color, as Illustrated in his Watercolors & Sketches" is a 148 page, 9.25"x12.25" hardcover written by Andrew Woelflein and published in 2007 by Schiffer Military History (Atglen, PA).
It's in very good condition, with light scuffing and edge wear to the dust jacket, a smudge to the back. The laminated boards show minimal wear, there are no internal marks, and the binding is tight.