The author wants to thanks to the following persons and institutions which had helped with the information that this site has.

• Carlos Escalante
• Carlos Ortega
• Carmelo Giuseppe
• Cecilia Armas
• Emilio Orta
• Felipe Zhou
• Fernando Aguerrever
• Hernan Urrutia. H & H Collections
• Homero González
• José Mandry
• José Miguel López Bravo - Chemy
• José Miguel Menéndez
• José Sleiman
• Leonardo Melero
• Manuel Rojas Aponte
• María Antonia González
• Massimo Pastorelli
• Megaser (tuvendes.com) - Fernando Ross
• Nelson de Freitas
• Noadit Rodriguez
• Numismática Globus
• Sergio Pimentel
• Sergio Sucre Castillo