5 Mark imperial yacht green black / carmine red, peace printing, 25 : 17 perforation holes, in perfect condition mint never hinged outstanding quality of the rare stamp, unsigned - so like yesterday at the post-office counter bought, photo expertize Dr. Brekenfeld BPP (2018) : "genuine and immaculate", Michel - . - in existing quality a Fata Morgana the issues of the German international post offices abroad and colonies!