| Prüfer | Art der Urkunde | Katalog | KatalogNr. |
|---|
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 86 L 1 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 87 L 56 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 89 L 1 |
| APS, (American Philatelic Society) (Prüferkommission) | Attest | Scott | 93 |
| APS, (American Philatelic Society) (Prüferkommission) | Attest | Scott | 93 |
| Brandon, David Expert Committee (Prüferkommission) | Attest | Scott | 93 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 95 L 1 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 96 L 3 |
| Karaivanoff, Vassil Petkov (Sonstiges) | Attest | Scott | 97 a |
| Weiss Expertizing International, . (Sonstiges) | Attest | Scott | 97 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 105 L 1 |
| APS, (American Philatelic Society) (Prüferkommission) | Attest | Scott | 109 |
| Buchsbayew, Paul (AIEP (Association internationale des experts en philatélie)) | Attest | Scott | 109 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 116 b |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 117 L 1 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 117 L 7 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 117 L 8 |
| Weiss jr., William R. (Sonstiges) | Attest | Scott | 118 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 119 a |
| Eichele, Martin (BPB (Briefmarkenprüfstelle Basel)) | Attest | Scott | 120 a |
| Sydney Philatelic Research, Drury, Michael (Sonstiges) | Attest | Scott | 125 |
| Sydney Philatelic Research, Drury, Michael (Sonstiges) | Attest | Scott | O 125 |
| Vincent Graves Greene, Philatelic Research Foundation (Prüferkommission) | Attest | Scott | 130 a |
| APS, (American Philatelic Society) (Prüferkommission) | Attest | Scott | 131 |
| APS, (American Philatelic Society) (Prüferkommission) | Attest | Scott | 132 L |
| The Philatelic Foundation, (Prüferkommission) | Sonstiges | Scott | 132 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | R 133 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 134 LU 3 VAR |
| Crowe, William T. (Sonstiges) | Attest | Scott | 137 |
| Sismondo, Sergio (Sonstiges) | Attest | Scott | 140-143 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 143L5 |
| Raritan, Stamps Inc. (Sonstiges) | Attest | Scott | 149 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 152 L 1 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 153 L 1 |
| PSE, Professional Stamp Experts (Prüferkommission) | Attest | Scott | 162 |
| The Philatelic Foundation, (Prüferkommission) | Sonstiges | Scott | 167 |
| The Philatelic Foundation, (Prüferkommission) | Sonstiges | Scott | 167 |
| Crowe, William T. (Sonstiges) | Attest | Scott | 183 |
| Friedl Expert Committee, (Prüferkommission) | Attest | Scott | 209 |
| Crowe, William T. (Sonstiges) | Attest | Scott | 211 |
| Iran Philatelic, Study Circle (Arbeitsgemeinschaft) | Attest | Scott | 222; 227 |
| Sadri, Mehrdad (Sonstiges) | Attest | Scott | 223 |
| Raritan, Stamps Inc. (Sonstiges) | Attest | Scott | 224 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 226 - 240 |
| BW, Brusden-White (Sonstiges) | Attest | Scott | 228 ca |
| Pinchot, S. & Daniel N. (Sonstiges) | Attest | Scott | 229 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 230 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 231 |
| The Philatelic Foundation, (Prüferkommission) | Attest | Scott | 231 |
| PSE, Professional Stamp Experts (Prüferkommission) | Sonstiges | Scott | 233 a |
