PRC CHINA 1999 UPU CONGRESS BEIJING STAMP W/ VERY RARE INVERTED CENTER ERROR VAR. Very few examples recorded. We endeavour to make our scans as clear as possible. Failure to pay will result in being blocked indefinitely. We try and describe the items to the best of our ability. We also endeavour to provide both sides scans wherever possible. Please feel free to ask us for higher resolution scans if you need to view any item more closely. MINT: Full gum, maybe lightly hinged. MNH: Mint Never Hinged, Full OG. Sheet: Includes MS + SS. Catalogues referred are: Scott and, Gibbons. In case of covers, there can be edge faults and minor imperfections which might have skipped our description, but will be evident from the scans provided. We try and show all scans to highlight faults, if any. The item “PRC CHINA 1999 UPU CONGRESS BEIJING STAMP With VERY RARE INVERTED CENTER ERROR VAR” is in sale since Thursday, May 23, 2019. This item is in the category “Stamps\Asia\China”. The seller is “asianstamp” and is located in Singapore. This item can be shipped worldwide.