X | 1c | blk | HAW |
- | 27 1/2c | blk | Queen Wilhelmina & liner |
X | 1c | blk | William Usselinx | |||
- | 20c | blk | Van Walbeecks flagship |
X | 21c | blk | Queen Wilhelmina |
X | 21c | blk | Queen Wilhelmina |
X | 21c | blk | Queen Juliana |
- | 5c | blk | plane & posthorn | — | — | |
- | 1.50g | blk | DC-4 over waves |
- | 70c | blk | allegory of flight |