NH = Never Hinged, PH = Previously Hinged, VVLH = Very Very Lightly Hinged, VLH = Very Lightly Hinged, LH = Lightly Hinged, H = Hinged, HR'S = Hinge Remnant(s), HH = Heavily Hinged, HHR'S = Heavy Hinge Remnant(s), GD = Gum Disturbance, NG = No Gum DG = Disturbed Gum, DOG Disturbed Original Gum, NGAI = No Gum As Issued, RG = Regummed. Policy does not allow time for submitting a stamp for certification.Variations in individual monitors mean that stamp photos are not 100% accurate. We are one of the largest companies in the United States specializing in the sale of large US and Worldwide Collections. We are members in good standing with the ASDA and the APS. International Buyers - Please Note. US and International laws prohibit such behavior. Powered by SixBit's eCommerce Solution.