Filings coherer, glass tube formed into T-shape at one end and bent round into U-shape at other end with bulb, 1899 Radio Communication 1899
Filings coherer, glass tube bent at 45-degree angle at one end to form side-pocket, 1898 Radio Communication 1898
filings coherer, small glass tube with bulb at one end and cap of red sealing wax at other end, 1898 Radio Communication 1898
Filings coherer, glass tube formed into bulbs at each end at right angles, 1899 Radio Communication 1899
Copy of clay liver used for divination, original from Babylon, 2050-1750 BCE Classical & Medieval Medicine 2050-1750 BCE
1898-1931, recording company; gramophone and radio manufacturer, British Gramophone Company Limited 1898 - 1931