Not issued: 1 Mark German Empire with overprint "Memelgebiet" on wrong definitive stamp (Mi number A113 a instead of Mi number 94 B II - in addition to the printing process, the design is also different - Reichspostamt now with flags), mint and unsigned, the error was only discovered 80 years after its release, photo certificate Prof. Dr. Klein BPP "Typical original gum is present. The condition is flawless.", Michel 18,000.-