Well, the problem with this jacket is that it is rare, especially in the First Issue. I am not sure that anyone can tell you absolutely all of the points of a First edition, First Issue and its dust jacket. One of the big problems with your jacket is that it is price clipped. So you have no way of knowing what the original price was on the jacket. Then you still have some controversy over what should be on the rear flap. If someday someone does list a copy of the book that has the correct price and that was signed by the author at sometime close to the release date, then you will have a much better indicator. Until that time arrives I would hate to pay a large price for the book purely on speculation. And I think the clipped price and the Blue Ribbon sticker would make me shy away from the book unless the price were reasonable. The book is hard to find in any Harper & Brother's jacket, so any copies found will have value, but when they were made over a 16 year period, you assume some are different from others. The collector wants the earliest copy he/she can find, and sometimes the price curve can be a fairly steep slope. Things like how early of an issue is the book/jacket and the condition of the book can have a large affect on the price. Probably even more so when you are dealing with a fairly scarce to rare item. Lets say someone were to pay $25,000 for a book like yours and then a week later they find evidence that it is a much later issue. I don't thing the buyer would be very happy. That is why most buyers are more cautious when dealing with unknowns. But then all sellers hope they will find someone with deep pockets who does not care. Someone with more dollars than sense. I think it is quite possible that you will do well with the book, but I doubt if the final price will be near the $25,000 mark, and probably the same is true with the one you saw listed for sale at that price. But I wish you good luck selling you book, and I hope you do well.
