1931 Paul von Hindenburg WM: 2

Stamp 447
CU7-s.jpg 4Pfg.
light blue

1931 Zeppelin - New Value WM: 2

Stamp 448
CV2-s.jpg 1Mk.
carmine

1931 Graf Zeppelin's North Pole Flying - Overprinted "POLAR - FAHRT - 1931" WM: 2

Stamp 449
DN-s.jpg 1Mk.
carmine
Stamp 450
DN1-s.jpg 2Mk.
ultramarine
Stamp 451
DN2-s.jpg 4Mk.
blackish brown

1931 Charity Stamps - Buildings WM: 2

Stamp 452
DO-s.jpg 8+4 Pfg.
green
Stamp 453
DP-s.jpg 15+5 Pfg.
carmine
Stamp 454
DQ-s.jpg 25+10 Pfg.
blue
Stamp 455
DR-s.jpg 50+40 Pfg.
brown