| PSE, Professional Stamp Experts (Prüferkommission) |
Attest |
Scott |
162 |
| Fédération québécoise, de philatélie (Prüferkommission) |
Attest |
Scott |
163 |
| CEM, Comision de Expertos de Madrid (Prüferkommission) |
Attest |
Edifil |
163 A |
| Raybaudi, Experts (Prüferkommission) |
Attest |
Michel |
164 |
| Philatelic Federation of South Africa, (Prüferkommission) |
Attest |
Stanley Gibbons |
166 |
| Philatelic Federation of South Africa, (Prüferkommission) |
Attest |
Stanley Gibbons |
167 |
| The Philatelic Foundation, (Prüferkommission) |
Sonstiges |
Scott |
167 |
| The Philatelic Foundation, (Prüferkommission) |
Sonstiges |
Scott |
167 |
