Overlapping stamps may result in the damage or loss of your material. If there is excessive overlapping, your book will be rejected. Items could be removed without detection. If this practice is not done correctly, it will result in confusion for the buyer. The Sales Division suggests mounting no more than 3 copies of the same item in each book.
Experience dictates that duplication results in poor sales.
Removing Pages Pages 1 through 9 must remain in a book, even if there are no items on them, to maintain enough stiffness for safe handling.