Poland, German Occupation (Krolestwo Polskie). 20 Pfennig 1917 FF, Stuttgart Mint, Parchimowicz 7a, KM Y#7, Fe 23 mm, weight 4,0 g., Condition XF+/XF, a nice, shiny specimen with its original color.
The word “FENIGÓW” is double stamped / “Double Die”.