| Prüfer | Art der Urkunde | Katalog | KatalogNr. |
|---|
| KGVI-Expertising, (Prüferkommission) | Attest | Stanley Gibbons | 80 e |
| KGVI-Expertising, (Prüferkommission) | Attest | Stanley Gibbons | O 88 a |
| KGVI-Expertising, (Prüferkommission) | Attest | Stanley Gibbons | O 97 a |
| KGVI-Expertising, (Prüferkommission) | Attest | Stanley Gibbons | 111 a |
| KGVI-Expertising, (Prüferkommission) | Attest | Stanley Gibbons | 813 a |
| KGVI-Expertising, (Prüferkommission) | Attest | Stanley Gibbons | CW S5 a |
| KGVI-Expertising, (Prüferkommission) | Attest | Stanley Gibbons | 30 a |
| KGVI-Expertising, (Prüferkommission) | Attest | Stanley Gibbons | 6 |
| KGVI-Expertising, (Prüferkommission) | Attest | Stanley Gibbons | 69 a |
| KGVI-Expertising, (Prüferkommission) | Attest | Stanley Gibbons | 230 da |
| KGVI-Expertising, (Prüferkommission) | Sonstiges | Stanley Gibbons | 397 a |
| Kaufmann, Jacques (Sonstiges) | Attest | Stanley Gibbons | 2 |
| Kaufmann, Jacques (Sonstiges) | Attest | Stanley Gibbons | 18 a |
| Kaufmann, Jacques (Sonstiges) | Attest | Stanley Gibbons | 59 |
| Kaufmann, Jacques (Sonstiges) | Attest | Stanley Gibbons | 84 |
| Kilian, Jürgen (BPP (Bund Philatelistischer Prüfer)) | Attest | Stanley Gibbons | 55 g |
| Kimmel, Kurt (SBPV / ASEP (Schweizerischer Briefmarken-Prüfer-Verband)) | Attest | Stanley Gibbons | 2 E; 8 a |
| Kimmel-Lampart, Kurt (BPP (Bund Philatelistischer Prüfer)) | Attest | Stanley Gibbons | 38 |
| Knopke, Karl (Sonstiges) | Attest | Stanley Gibbons | 60 |
| Knopke, Karl (Sonstiges) | Befund | Stanley Gibbons | 99 |
| Knopke, Karl (Sonstiges) | Befund | Stanley Gibbons | 126 |
| Knopke, Karl (Sonstiges) | Attest | Stanley Gibbons | 212 |
| Knopke, Karl (Sonstiges) | Attest | Stanley Gibbons | 369 |
| Knopke, Karl (Sonstiges) | Befund | Stanley Gibbons | 408 |
| Knopke, Karl (Sonstiges) | Attest | Stanley Gibbons | 101 |
| Knopke, Karl (Sonstiges) | Attest | Stanley Gibbons | 56; 58 |
| Lange, Carl H. (Sonstiges) | Attest | Stanley Gibbons | 28 a |
| Longo, Bernardo (Sonstiges) | Attest | Stanley Gibbons | 314 a |
| Longo, Bernardo (Sonstiges) | Attest | Stanley Gibbons | 314b |
| Longo, Bernardo (Sonstiges) | Attest | Stanley Gibbons | 100 a |
| Longo, Bernardo (Sonstiges) | Attest | Stanley Gibbons | 925 |
| Longo, Bernardo (Sonstiges) | Attest | Stanley Gibbons | 925 |
| Longo, Bernardo (Sonstiges) | Attest | Stanley Gibbons | 925 |
| Louis, Karl-Albert (BPP (Bund Philatelistischer Prüfer)) | Attest | Stanley Gibbons | ME1 |
| Louis, Karl-Albert (BPP (Bund Philatelistischer Prüfer)) | Attest | Stanley Gibbons | 1 |
| Louis, Karl-Albert (BPP (Bund Philatelistischer Prüfer)) | Attest | Stanley Gibbons | 1 b |
| Louis, Karl-Albert (BPP (Bund Philatelistischer Prüfer)) | Attest | Stanley Gibbons | 5 |
| Louis, Karl-Albert (BPP (Bund Philatelistischer Prüfer)) | Attest | Stanley Gibbons | AS 5; AS 5 h |
| Louis, Karl-Albert (BPP (Bund Philatelistischer Prüfer)) | Attest | Stanley Gibbons | 59 |
| Moorhouse, Brian (Sonstiges) | Attest | Stanley Gibbons | 10 |
| Moorhouse, Brian (Sonstiges) | Attest | Stanley Gibbons | 3 b |
| Moorhouse, Brian (Sonstiges) | Attest | Stanley Gibbons | 2 |
| Muentz, Hans Georg (Sonstiges) | Attest | Stanley Gibbons | 84 |
| NPC, National Philatelic Centre (Prüferkommission) | Attest | Stanley Gibbons | 3; 4 c |
| Odenweller, Robert P. (AIEP (Association internationale des experts en philatélie)) | Attest | Stanley Gibbons | 1 |
| Odenweller, Robert P. (AIEP (Association internationale des experts en philatélie)) | Attest | Stanley Gibbons | 34 |
| Odenweller, Robert P. (AIEP (Association internationale des experts en philatélie)) | Attest | Stanley Gibbons | 39 |
| Odenweller, Robert P. (AIEP (Association internationale des experts en philatélie)) | Attest | Stanley Gibbons | 40 |
| Odenweller, Robert P. (AIEP (Association internationale des experts en philatélie)) | Attest | Stanley Gibbons | 49 |
| Odenweller, Robert P. (AIEP (Association internationale des experts en philatélie)) | Attest | Stanley Gibbons | 52 |
