RARE 1948 Egyptian Poison Earrings Secret Compartment Clip On Vintage

Rare and unusual Egyptian poison/secret compartment clip-on earrings featuring oval unknown stones and hinged compartments concealed beneath the tops. The back mark appears consistent with a documented Egyptian 1948 date mark; an additional tiny symbol on one clip remains unidentified. No sterling/fineness mark is visible. Metal is non-magnetic. Stone tested with a very low response, just below...