This is detailed in the Scott specialized Catalogue. Pricing values are for those as such with flaws that are not readily noticeable from the front. We provide Quality front and back scans so that you can see exactly the condition offered. We endeavor to disclose latent issues not visible in the scan. We reserve flawless and sound terms for defect free examples which are scarce and command much higher prices.We welcome your inquires in advance and thank you for looking. This item is in the category "Stamps\United States\Back of Book\Revenues". The seller is "americasstampstop" and is located in this country: US. This item can be shipped worldwide.