Goosebumps Book 60: including Wolf Mask

Goosebumps book 60 titled Werewolf Skin by RL Stine. Includes wolf mask still attached in book, slight separation on perforated edge as pictured. Shows yellowing on inside of covers and all pages. Front cover has top right corner broken off and included in baggie. Front cover has missing piece and additional crack as pictured. Please refer to all photographs for current condition of this book.