5th-3rd century BC. An electrum finger ring with flanges to the rim, tiered trumpet bezel, central inset banded agate gemstone with intaglio lobster motif. 16.16 grams, 34mm overall, 24.34x20.95mm internal diameter (approximate size British W 1/2, USA 11 1/4, Europe 25.66, Japan 25) (1 1/3"). From an important private London collection, acquired prior 1970s.