I have several editions,
This review is from: Coins of England and the United Kingdom: Standard Catalogue of British Coins (Hardcover)
I have several editions of this book. You can never have too many. Each one comes with a different mix. And the newer editions of course will have the newer coins. This is not a substitute for the Standard Catalog of World coins but is better focused on England and a lot easer to carry.
The book also teaches us a little bit of symbolism and history.
Keep in mind that this is still just a guide. Other factors determine the value of the coin to you and others.