Brazil 1768 320 reis
This silver 320 réis was minted at the Lisbon mint during 1768-76. This coin would have traded in the 18th century as one-third of a Spanish dollar. The 320 réis is half the size of the more common 640 réis. In 1768 the weight of this denomination was lowered from 9.66 grams to 8.90 grams. Earlier silver 320 réis are known, starting in 1695. Many are priced very low in the SCWC but remain very hard to find. The specimen was lot 20390 in Heritage sale 3009 (Chicago, April 2010), where it sold for $1,495. The catalog description noted, "Jose I 320 Reis 1768, struck at Lisbon, about VF, a rare one-year type." The similar KM 192.2 was struck 1768-76 and is more available tho not common.
Recorded mintage: 47,000 (including KM 192.2).
Specification: 8.90 g, .917 fine silver, .262 troy oz ASW.
Catalog reference: KM 192.1, Russo 172.
- Krause, Chester L., and Colin R. Bruce II, Standard Catalog of World Coins: Spain, Portugal and the New World, Iola, WI: Krause Publications, 2002.
- Pimentel, Alvaro Mendes, Catálogo de Moedas Brasileiras de 1643 a 1962, 9a Ed., Rio de Janeiro, 1962.
- Amato, Claudio, Irlei S. Neves and Arnaldo Russo, Livro das Moedas do Brasil, 12a ed. Sao Paulo, 2008.
- 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.
- Tucker, Warren, and Scott Cordry, Heritage Signature Auction 3009: World Coins, Dallas, TX: Heritage Auction Galleries, 2010.