Watch List notes:

Argentine-Chilean Union against Spain, silver medal, 1820, by J. de Dios Espejo, very rare. Medina-5. 43.89 grams. Obverse with UNION E LIBERI above arms of Chile and Argentina among flags, cannons and cannonballs, exergue POR J DE DIOS ESPEJO. / AN. DE / MDCCCXX.; reverse with LI / BERTAS / POPULO DILECTA / FUNESTA TIRAN / NIS• inside wreath. Struck at the mint in Santiago, Chile, by order of General Bernardo O'Higgins to commemorate the assistance of Argentina (particularly by General Jose de San Martin) in the famous "crossing of the Andes" in 1817 to defeat the Spanish and confirm Chile's independence. These medals, of which only three or four are known to still exist, were rumored to have circulated as coins during bad economy, this one attractively toned AU with tiny spots of die-rust.

Estimate: $3000