H: hinged or lightly hinged or hinge remnant, use back image to decide. Unused: unused stamp with no gum or regummed. NGAI: No Gum As Issued. #1-10: means complete set from 1 to 10.#1/10: means incomplete set from 1 to 10. Values mentioned in title is for Catalogue values. If sign is used before the value then its Michel Value and Catalogue number in 95% of the cases. Check our other items in the Store. The item "MOMEN US STAMPS #F1 MINT OG NH PF CERT VF/XF" is in sale since Saturday, September 28, 2019. This item is in the category "Stamps\United States\Back of Book\Other US Back of Book Stamps". The seller is "momenstamps" and is located in Cary, North Carolina. This item can be shipped worldwide.