Urkunden Prüfgebiet: Kolumbien

Prüfer	Art des Attestes	Katalog	KatalogNr.
Drouot, 18 (Händlergarantien)	Attest	Michel	2 b
Colomphil, (Prüferkommission)	Attest	Michel	2 b
The Philatelic Foundation, (Prüferkommission)	Attest	Scott	2 c
Rendon, Alex (AIEP (Association internationale des experts en philatélie))	Attest	Scott	26 b
Moorhouse, Brian (Sonstiges)	Attest	Scott	37; 38
Moorhouse, Brian (Sonstiges)	Attest	Michel	37; 38
Moorhouse, Brian (Sonstiges)	Attest	Scott	46
Moorhouse, Brian (Sonstiges)	Attest	Scott	54 a; 62 a