Pair of 18ct gold and diamond lapel pins, Cartier, circa 1930, each modelled as a stylised scallop shell supported by a scrolling ribbon, one accented with two single-cut diamonds, the ribbon engraved with a service award '30 ans'; the other accented with one single-cut diamond and similarly engraved '25 ans', approximately 15 x 13 mm, signed Cartier, Paris.