3 Rbl on 60 K carmin, horizontal t_t_-b_che pair with inverted and normal state overprint mint never hinged, certificate Zirath BPP (2015) " . . . Have in each case an authentic overprint. . . These stamps appertain with to the largest rarities of the German Besetzungssausgaben in the II. world war. " Michel valued the t_t_-b_che pairs with -.-, already a single stamp with inverted overprint appraises 14. 000.- EUR ! There are very few pieces of this stamp with inverted overprint recorded!