Lot 50475 – 1933 Airmails, 14 different value control blocks “

1933 Airmails, 14 different value control blocks “cancelled” on reverse, 1m. A/35, 2m. gray-black A/35, 2m. red-orange A/38, 3m. A/37, 4m. A/36, 5m. B/39, 6m. A/38, 7m. A/36, 8m. A/38, 9m. A/37, 10m. A/37, 20m. A/37, 30m. A/37, 200m. A/32, the second largest group of control blocks with “cancelled” on reverse, rare, NP A3 to A/15 and A/23