This book about watches and repairing watches was published in the 1940s. I couldn't find a specific date in the book, but one of the diagrams had information from the late 1930s, so it makes sense that it was published in the 40s. It's hardcover and the binding is solid. The paper cover is torn and quite worn. The interior is good but there are some spots on the insides of the covers and adjacent pages. The book doesn't smell musty to me. Thanks for looking!