CDS - Circular Date Stamp CC - Cut Cancel CV - Catalog Value SON - Socked on the Nose. H - Hinged M - Mint F - Fine VF - Very Fine. LH - Lightly Hinged MNH - Mint Never Hinged NH - Never Hinged NGAI - No Gum As Issued. VLH - Very Lightly Hinged OG - Original Gum XF - Extra Fine DLWM - Double Line Water Mark. SF - Space Filler HR - Hinge Remnant UWM - Unwatermarked SLWM - Single Line Water Mark. This item is in the category "Stamps\United States\Back of Book\Revenues". The seller is "bigjake111" and is located in this country: US. This item can be shipped worldwide.