1 Mark red-carmine Steelworks and Dove of Peace, 4 Mark on 60 Pfg dark greenish olive definitive issue 1922, on registered letter to Berlin and back, double-circle HINDENBURG 28 3 22 g (OBERSCHL) 1 (OS handbook no. 110.10), Berlin (29.3.1922) and Hindenburg (30.3.1922) arrivals (OS handbook no. 119.6) both on reverse, advertising label "Printator Stempelgeräte" used as seal on reverse, age and use wear typical of period