1.50 R on 15 Kop. Workers, dark grey-green, overprint type II (swastika 6mm), left sheet margin example, cancelled with altered double-circle (K2) and single-line "Alexanderstadt", perfect condition with issue-typical perforations, very rare stamp, signed EKeiler and others, photo certificate Walter Zirath BPP "The condition is faultless and the irregular perforations are typical.", Mi. 7.000.-