1949 - 1960, mint never hinged collection corner margin copies and margin features, including Michel number 111 / 12 as horizontal lower margin pairs with plate number "11", posthorn except for 30 penny (corner margin lower right) as uniform set from corner margin top left, Heuss I from all four corners of the sheet, also other issues partly multiple - then always various corners including also some form numbers, in this kind and concentration rare, the condition is partly a little varying, in total but very clean, please check carefully!