50 C on 40 Pfg dark reddish carmine / black, 1 F 25 C on 1 Mark dark carmine red 25 : 17 perforation holes overprint shining on registered letter to Berlin, ZKr Brussels 21.2.17 11-12 V * 1 d, elliptic censorship stamp the German Military censorship in Brussels, arrival postmark Berlin (23.12.17) at back, very neat postmarks repulses, very fine