A nice piece. Typical sheet metal defects for Bydgoszcz issues.
Bust type VI - classic Bydgoszcz portrait used during A. Tymf's tenancy paired with old reverse type used during T. Tymf's tenancy. Variant of the inscription on the obverse from SMDLP.
The coin illustrated in the catalog of L. Ciura.
Note: the book is not the subject of the auction.