1945 Handbook of United States Coins 4th Edition RS Yeoman “Blue Book” Whitman
Assuming this book is 1945 based on the publishing date.
This predates the RedBook which first came out in 1952
Book is in pretty rough condition. Can barely read the cover, split spine, loose last page. Pencil marks on the inside but it's neat to look at the pricing of key coins back in 1945.