A GROUP OF FOUR SHELL CAMEO BROOCHES, To include an oval brooch with man in profile, length 2.5cm ; an oval brooch with female profile in a filigree frame, length 3.5cm ; a carved shell cameo oval pendant with lady in profile, length 2.5cm ; a brooch reversible into a pendant depicting Terpsichore in profile with her lyra, length 3.3cm