"American Watchmaking: A Technical History 1850-1930" by Michael C Harrold is a comprehensive book on the history and technique of antique watches from the Victorian era to the early 20th century. With detailed illustrations and a nonfiction narrative, this paperback publication provides insights into the world of timepieces, watch repair, and the evolution of American watchmaking. Written in English and focusing on a technical aspect, this book is intended for young adults and adults interested in the intricate world of antique watches, making it a valuable resource for collectors and enthusiasts alike.