Search for all terms: Material: brass? 14 records found.Records with Images1. Gyroscope, by Newton & Co., London, c.1905 2. Potentiometer For Marconi Five-Valve Receiver, by Marconi Company,... 3. Marconi-Osram Radio Valve Type DER, by Marconi Company, London,... 4. Marconi-Osram Radio Valve Type DER, by Marconi Company, London,... 5. Marconi-Osram Radio Valve Type R, by Marconi Company, London,... 6. Marconi Radio Valve Type DE6, by Marconi Company, English,... 7. Experimental Round Radio Valve Type CA, by Ediswan, London,... 8. Marconi Radio Valve Type DE3, by Marconi Company, London, c.... 9. Osram Radio Valve Type R, by Osram, English, c. 1918 10. Marconi-Osram Radio Valve Type R, by Marconi Company, London,... 11. Marconi-Osram Radio Valve Type DER, by Marconi Company, London,... 12. Spare Wires, 20th Century 13. Terminal, Early 20th Century 14. 12 Volt Fleming Valve, by Royal Ediswan, London, c. 1905
