The product is a rare and valuable 1944 International Correspondence School Marine Diesel Engines Book Edition 1. This original publication is a unique piece of historical memorabilia that provides insights into the teaching and education of marine diesel engines in the mid-20th century. Perfect for collectors or those interested in the history of maritime technology, this book offers a glimpse into the past and is a valuable addition to any collection. The front cover has the number 11 on the front, see figures for appearance. Thanks for looking