30 C. Iris with hand stamp overprint \"fortress Lorient\", corner margin piece lower left with variety \"inverted overprint\" as well additional overprint on the margin of sheet with sheet number 74812, unused with original gum with adhesions, margin of sheet slight defects, issued only 600 examples, with sheet number can only 6 - 7 pieces occur, photo expertize Lothar Herbst VP \"the other condition is perfect. \"