The product is a rare hardback edition of John Bunyan's "Holy War" titled "By Shaddai on Diabolus," published by Haughton & Co around 1900. This edition is a valuable addition to any collector's library, featuring the original English language text by the renowned author. The non-fiction subject matter of literature, poetry, and criticism adds depth to this unique and sought-after piece, making it a prized possession for fans of John Bunyan's work.