Brazil 1820-R 640 reis

from the Mountain Groan Collection

This type was struck 1818-22 at Rio (KM 325.2, common), 1820 at Bahia (KM 325.3, scarce) and 1818 at Minas Gerais (KM 325.1, very rare).

Recorded mintage: 20,267.

Specification: 17.92 g, 0.917 fine silver.

Catalog reference: KM 325.2, LMDB-P473.

Source:

• Amato, Claudio, and Irlei S. Neves, Livro das Moedas do Brasil, 14a ed. Sao Paulo, 2015.
• Alberto Gomes and Francisco Antonio Magro, Moedas Portuguesas e do Território Que Hoje é Portugal: Catálogo das Moedas Cunhadas para o Continentes e Ilhas Adjacentes, para os Territórios do Ultramar e Grão-Mestres Portugueses da Ordem de Malta, 6ª Edição, Lisbon: Associação Numismática de Portugal, 2013.
• Michael, Thomas, and Tracy L. Schmidt, Standard Catalog of World Coins, 1801-1900, 9th ed., Iola, WI: Krause Publications, 2019.
• Pimentel, Alvaro Mendes, Catálogo de Moedas Brasileiras de 1643 a 1962, 9a Ed., Rio de Janeiro, 1962.

Link to:

• Brazil 1820-R 10 reis
• Brazil 1820-R 20 reis
• 1820-R 40 réis
• 1820-B 80 réis
• 1820-R 80 réis
• 1820-R 320 réis
• Brazil 1820-B 960 reis
• Brazil 1820-R 960 reis
• 1820(b) 4000 réis
• 1820(r) 4000 réis
• 1820-R 6,400 réis
• Coins and currency dated 1820
• return to coins of Brazil