I had difficulty finding a old copy of this book online. So I went to www.wikipedia.org.
Sir Walter Scott was a prolific Scottish novelist (1771-1832).
The Betrothed was the first of two books from a series called Tales of The Crusaders. The second book was The Talisman.
These books were written in 1825.
If your book is dated 1825 and the book is in reasonable condition with boards, spine and pages intact and no major problems with water or staining, then this is likely to be valuable.
I would contact a rare book dealer or auction house. You can get in touch online with an auction house through a form at www.pbagalleries.com. They are in San Francisco.
