Only 12 stamps of No. 8 50/6 Kn Dubrovnik exist with inverted overprint. This is due to the incorrect insertion of the pieces when repairing one incomplete sheet. The following overprint positions are known so far:
- 35 and 45 as part of a tête-bêche block of four
- 65, 66, 75, 76 in a block of four
- 57, 64 and 67 as individual stamps
So there are a total of nine known positions. We can conclude that the remaining three are located close to the known ones.
Positions of nine known inverted overprints. The remaining three are most probably located somewhere near the known ones.
1945 Mostar provisional issue, No. 8 50/6 Kn Dubrovnik, tête-bêche block of four from positions 34,35/44,45. Unique item. Ex Tiberio.