70 C. Plus 80 C. Charity issue \"Births decline\" with overprint in type II, variety \"overprint inverted\", in perfect condition unused with full original gum and small rest of hinge, unsigned, photo expertize Lothar Herbst VP (2018) : \"the condition is perfect. Due to the very small edition from only approximate 80 - 100 pieces are these stamps very rare. Stamps with inverted overprint (top down) are by type II nearly unknown. With this special stamp are me so far only 3 pieces known an extremely scarce rarity. \"