Souvenir sheet "10 years German help in need", especially attractive with on of this issue scarce special cancel "Hanover stamps exhibition Hanover 11.-19.5.1935 18.5.1935" cancelled, full original format and stamps with original gum, faultless choise copy condition, without signs, photo expertize Hans-Dieter Schlegel BPP (2018) : "the quality is perfect. ", Michel 12.000.- -, in this perfect and nice cancelled condition only hard to find! With this cancellation probably an unique!