Rua Capela da Lagoa, 463, 4420-402 Valbom Gondomar
Established at Porto in 1874 by Manuel José Ferreira Marques, the business was then styled Ferreira Marques & Irmão. José Manuel Ferreira Marques died in 1930 and the business passed to his sons, Gabriel and Silvestre Ferreira Marques. In 1934 the brothers created the Topázio brand.
Examples of the work and marks of Topázio:
The firm did not manufacture plated articles until post-1970.
An example of the work and mark of Joaquim Monteiro da Silva e Sousa:
Joaquim Monteiro da Silva e Sousa, from Gondomar; registered in Porto 1953 and cancelled in 1978. Many Gondomar makers were registered with the Porto Assay Office.