Tesaurus d'Art i Arquitectura Getty Institute 0000-00-00 2024-01-24 15:40:44 en proof coins300193496coins, proofproof coinproofs Coins struck more than once in place on planchets with special polished or matte surfaces, from specially prepared polished dies, and usually for presentation or for sale to collectors and not intended for circulation. moneda de mostra monedas de muestra 2026-03-30 20:56:13