| Prüfer | Art der Urkunde | Katalog | KatalogNr. |
|---|
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 2 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 2 c |
| The Philatelic Foundation, (Prüferkommission) | Sonstiges | Scott | 2 |
| APS, (American Philatelic Society) (Prüferkommission) | Attest | Scott | 3 b |
| APS, (American Philatelic Society) (Prüferkommission) | Attest | Scott | 3 a |
| BPA, Expertising Limited (Prüferkommission) | Sonstiges | Scott | 3 |
| BPA, The British Philatelic Association Limit (Prüferkommission) | Sonstiges | Scott | 3 |
| Dias, Paulo A.P. (Sonstiges) | Attest | Scott | 3 a |
| Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) | Attest | Scott | 3 b |
| Friedl Expert Committee, (Prüferkommission) | Attest | Scott | 3 a |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) | Attest | Scott | 3; 15 |
| Moorhouse, Brian (Sonstiges) | Attest | Scott | 3 |
| Moorhouse, Brian (Sonstiges) | Attest | Scott | 3 BA |
| PSAG (Philatelic Stamp, Authetication and Grading) (Prüferkommission) | Attest | Scott | E 3 |
| PSAG (Philatelic Stamp, Authetication and Grading) (Prüferkommission) | Attest | Scott | 3 |
| PSAG (Philatelic Stamp, Authetication and Grading) (Prüferkommission) | Attest | Scott | 3 |
| PSE, Professional Stamp Experts (Prüferkommission) | Attest | Scott | 3 |
| Raybaudi, Experts (Prüferkommission) | Attest | Scott | 3 |
| Sismondo, Sergio (Sonstiges) | Attest | Scott | C 3 b |
| Sismondo, Sergio (Sonstiges) | Sonstiges | Scott | 3 |
| The Egypt, Study Circle (Arbeitsgemeinschaft) | Attest | Scott | C 3 a |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 3 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | C 3 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 3 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 3 LB 1 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 3 L 2a |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 3 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | E 3 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 3 X 3 |
| Trachtenberg, Henri (AIEP (Association internationale des experts en philatélie)) | Attest | Scott | C 3 |
| Vincent Graves Greene, Philatelic Research Foundation (Prüferkommission) | Attest | Scott | C 3 c |
| Vincent Graves Greene, Philatelic Research Foundation (Prüferkommission) | Sonstiges | Scott | 3 |
| Heister, Knut (VP (Verband Philatelistischer Prüfer)) | Attest | Scott | 4 d |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) | Attest | Scott | 4 |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) | Attest | Scott | 4 |
| Moorhouse, Brian (Sonstiges) | Attest | Scott | 4 |
| Sismondo, Sergio (Sonstiges) | Attest | Scott | 4 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 4 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | C 4 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 4 LB 21 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 4 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 4 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 4 |
| Vincent Graves Greene, Philatelic Research Foundation (Prüferkommission) | Attest | Scott | 4 |
| Weiss jr., William R. (Sonstiges) | Attest | Scott | 4 |
| APS, (American Philatelic Society) (Prüferkommission) | Attest | Scott | 5 |
| APS, (American Philatelic Society) (Prüferkommission) | Attest | Scott | 5 |
| Crowe, William T. (Sonstiges) | Attest | Scott | 5 |
| Diena, Enzo (Sonstiges) | Sonstiges | Scott | C 5 |
| Friedl Expert Committee, (Prüferkommission) | Attest | Scott | C 5 |
