| Prüfer | Art der Urkunde | Katalog | KatalogNr. |
|---|
| Experts &, Consultants Limited (Prüferkommission) | Attest | Scott | 237 a |
| Crowe, William T. (Sonstiges) | Attest | Scott | 238 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 259 a |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 259 a |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 259 a |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 295 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 295 a |
| Bach, Jean-Paul, und Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) | Attest | Scott | 335; 315; 317 |
| Rossica, The Society of Russan Philately (Prüferkommission) | Attest | Scott | 362 |
| Berger, Stefan (Arbeitsgemeinschaft) | Kurzbefund | Scott | 381 |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) | Attest | Scott | 445 |
| Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) | Attest | Scott | 449 PI |
| PSE, Professional Stamp Experts (Prüferkommission) | Sonstiges | Scott | 449 |
| MEPSI, Mexico Elmhurst Philatelic Society Inter (Prüferkommission) | Attest | Scott | 453 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 475 |
| PSE, Professional Stamp Experts (Prüferkommission) | Attest | Scott | 491 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 491 |
| PSE, Professional Stamp Experts (Prüferkommission) | Sonstiges | Scott | 498 b |
| Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) | Attest | Scott | 506 |
| Crowe, William T. (Sonstiges) | Attest | Scott | 526 |
| Vincent Graves Greene, Philatelic Research Foundation (Prüferkommission) | Attest | Scott | 537 i |
| PSE, Professional Stamp Experts (Prüferkommission) | Attest | Scott | 551 |
| Sadri, Mehrdad (Sonstiges) | Attest | Scott | 567 |
| Crowe, William T. (Sonstiges) | Attest | Scott | 581 |
| Sadri, Mehrdad (Sonstiges) | Attest | Scott | 587 |
| PSE, Professional Stamp Experts (Prüferkommission) | Sonstiges | Scott | 594 |
| Gratton, Richard (AIEP (Association internationale des experts en philatélie)) | Attest | Scott | 607 ii |
| Gratton, Richard (AIEP (Association internationale des experts en philatélie)) | Attest | Scott | 607 ii |
| Raritan, Stamps Inc. (Sonstiges) | Attest | Scott | 616 A |
| Crowe, William T. (Sonstiges) | Attest | Scott | 651 |
| PSE, Professional Stamp Experts (Prüferkommission) | Attest | Scott | 689 |
| PSE, Professional Stamp Experts (Prüferkommission) | Attest | Scott | 707 |
| Sadri, Mehrdad (Sonstiges) | Attest | Scott | 877 - 901 |
| Sadri, Mehrdad (Sonstiges) | Attest | Scott | 896 var |
| Gratton, Richard (AIEP (Association internationale des experts en philatélie)) | Attest | Scott | 924 c |
| Vincent Graves Greene, Philatelic Research Foundation (Prüferkommission) | Attest | Scott | 936 a |
| Friedl Expert Committee, (Prüferkommission) | Attest | Scott | 1300 |
| PSAG (Philatelic Stamp, Authetication and Grading) (Prüferkommission) | Attest | Scott | 1384 |
| Vincent Graves Greene, Philatelic Research Foundation (Prüferkommission) | Attest | Scott | 1442 b |
| APS, (American Philatelic Society) (Prüferkommission) | Attest | Scott | 1578 b |
| PSE, Professional Stamp Experts (Prüferkommission) | Sonstiges | Scott | 1727 |
| Zagorsky, Valery Borisowitsch (AIEP (Association internationale des experts en philatélie)) | Attest | Scott | 2145 |
| PSE, Professional Stamp Experts (Prüferkommission) | Attest | Scott | 3054 e |
| APS, (American Philatelic Society) (Prüferkommission) | Attest | Scott | 3895 |
