Postby blakstone » Sun Dec 30, 2012 2:35 am
Brazilian! (That's one well-traveled fish slice!)
“JASF” is correct, for José Antônio de Sousa Ferreira, working 1847-1854 in Rio de Janeiro. “10” indicates the purity of 10 dinheiros, or .833.
Hope this helps!
Ref: José Gisella Valladares, As Artes Plásticas do Brasil: Ourivesaria (Rio de Janeiro: Ediouro,1952), p. 258.