This book is in EXCELLENT condition with no markings inside or out and no attached bookplates, but faint aging spots on the cover. The spine is strong and properly tight. The slipcase is in EXCELLENT condition. I'd give the condition of the book and case together an 8/10
The wavy effect that may appear in multiple pictures is only "moiré pattern". It occurs when a scene or an object that is being photographed contains fine, repetitive details that exceed sensor resolution. As a result, the camera produces strange-looking wavy patterns. It is simply an effect and doesn't exist on the book in real life.
For anyone unfamiliar with Folio Society books, they are constructed using only high-quality materials with uncompromising methods by masters in bookmaking. All are wonderfully illustrated on gorgeous paper with deep fonts. For most people who are only familiar with generic Chinese-manufacturered, mass-produced books, the obvious quality difference is instantly revelatory.