Name | Participants | Dates | Stamps | ||
SAPOA | 6 | (with Botswana - Zimbabwe) | 2004 | 53 | (incomplete) |
SAPOA 2007 | 4 | (with Botswana - Zimbabwe) | 2007 | 20 | (incomplete) |
Whales of the Southern Oceans | 3 | (with Norfolk Island - South Africa) | 1998 | 7 | (incomplete) |