Independant state of Croatia

**,53P (4), 57P (4),

"Cities". Proofs of 3 Kuna in imperforate block of four, with gutter and 6 Kuna in imperforate block of four, both in changed colours: red-brown-violet colour shades. The gutter is creased as usual. Se-tennant pairs of different values with gutter are rare,  few stamps also show some unrecorded plate flaws, rare.