When a person purchases a book at the book store, they may thumb through the pages to judge the qualifications of the book, the authors, and whether it fits their need or not. I am slowly learning who the good authors are in the collectible field to know whether to purchase their books on-line or not. This was definitely not the case with this book nor another book I purchased by these authors. I wanted an Avon book to help me identify and describe the collectible Avon Jewelry that I have found at various estate sales, and thought this book could help. I was definitely mistaken. Anyone can state, "Christmas Tree Pin with red stones, circa 1990" as stated on page 62, instead of Avon's description of "Victorian Tree Pin" with the actual date of 1992. Or on page 39, authors wrote "Abolone (sic - spelled wrong) set includes necklace with 14-inch silver metal chain, silver bracelet trimmed with gold, and ring set in silver, circa 1990s," when there is nothing gold or silver about the set, except maybe washed in gold or silver, but definitely not true silver or gold; Avon advertised this set in their 1975 catalog, much earlier than 1990s. Then, the last straw for me is the beautiful set that Avon sold in 1971 (page 37); even though the authors got the date correct, they simply ignored the title to the set, but instead wrote, "pearl and gold set" when this set is Avon's "Evening Creation" set. Did the authors do any research? I think not. Will I ever be so stupid as to purchase another one of their books? No way! I would resale this book, but I don't want another person to be as disappointed as I was when I purchased this book on-line; not to mention that at the same time, I also purchased their waste of writing book entitled, "Sarah Coventry Jewelry."