New bimetallic circulating commemorative:
"700th anniversary of the lunar foundation of the city of Mexico-Tenochtitlan"
External ring: aluminium-bronze
Center disc: copper-nickel-zinc
Diameter: 30.00 mm
Weight: 12.67 g
Mint: Casa de Moneda de México
(image and data from www.banxico.org.mx)
LINK: Banco de México
