500 zloty 1940 with numbering A 13.... characteristic of London falses with the stamping and Pyotr description of a typical London false, but without the features of the false - looking like the original, only misclassified in the era due to momentum. It was probably noticed right away in the era, annotated in pencil with an exclamation mark, in the old handwriting, in German "Echt" i.e. "True".
Piece without any stamping on the back, including without the characteristic - rectangular stamp, so perhaps such appeared, for example, after the forgery was transferred to some other cell, department(?). Undoubtedly a unique item in this form.