Both pairs of cufflinks were made by the well known Mexican studio Victoria. This dates the pair prior to 1953 when the name of the studio was combined with "Cony". Round silver and copper cufflinks measure 1 inch in diameter. Square pair is sterling, copper, brass and another grey metal which I cannot specify. The dark area on the left one is a shadow only; it is not on the actual cufflink. Measure 7/8 inch square.