A very rare item whose rarity is made up of two factors.
The first is that it is a 1-mark 1916 issue jeneral with a very rare B series. Another even more interesting aspect of this item is its numerator, which begins with the number "6", rather than the usual "9" for this variety.
The rarity of this item is noted and appreciated by Mr. Michal Biskup in his specialized publication "Banknotes my passion - Notebook II".