So any number up to 228 would qualify for the bigger bucks. If no number exists, Toledano says to judge by other criteria such as binding type, other dust jacket clues, and so on. Illustrations abound for each of these criteria. If you like collecting dust jacket variations, you'll love the new section that Toledano has added to the main listing tables. The remaining periods use the same descriptors but refer to later logo and design elements.
Some books show more than one variation in a period.
O'Neil's Long Voyage Home shows four variations in the 1940-1970 period with three pictorials and a typographical. It has 20 pages of photographs, nine to a page, showing titles with three variations each. The back cover shows an additional 16 photos for eight pairs of variations. None of these are duplicates, heaven help us and our budgets. So an E entry is worth less than an H entry, while an M is worth more than either.