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.
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Positions of nine known inverted overprints. The remaining three are most probably located somewhere near the known ones.
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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.