5 R. On 10 Kop. Red lilac, overprint in type III, variety "double overprint", neat cancelled with mute stamp "15 5 42" and straight-line cancel "Alexanderstadt" on beautiful letter piece, these stamp is anyway already rare, with double overprint is an unique, photo expertize Zirath BPP (2019) : "genuine. Defects are indistinguishable. To this day is me only this copy known. These stamps appertain with to the largest rarities of the German occupation issues in the II. World war. ", Michel - . - superb item of this rarity!