1941 NDH, Red cross sheets with phase shift

1941 NDH, Red cross charity, imperforated sheets with color phase shift are a great rarity of Croatian philately. Only four sets were known and only two remains.

1941 Red cross charity, 1.50 + 1.50 Kn imperforated sheet, main color shifted to the left. Certificate Zrinjšćak.

1941 Red cross charity, 2 + 2 Kn imperforated sheet, background color shifted down. Certificate Zrinjšćak.

1941 Red cross charity, 4 + 4 Kn imperforated sheet, main color shifted to the left. Certificate Zrinjšćak.