1889 EXPERIMENTAL OSCILLATION DEVICE 1895 OSCILLATOR - SPARK GAP 1896 PARABOLIC REFLECTOR FOR RECEPTION COHERER / RECEIVER (1) RIGHI OSCILLATOR 1897 NEWTON INDUCTION COIL (2) 1898 18 INCH INDUCTION COIL 1899 TUNED TRANSMITTER NEWTON INDUCTION COIL (1) MORSE KEY (2) 'LONG TOM' TILTING BOARD EXHIBITION MEDAL 1899 1900 TUNED CIRCUIT TRANSMITTER MORSE TAPE INKER MORSE KEY (1) LEYDEN JARS (1) LEYDEN JARS (2) LARGE LEYDEN JAR BILLI CONDENSER 1901 TELEPHONE RECEIVER TRANSATLANTIC COHERER KITE 1902 TRIPLE X-STOPPER COHERER / RECEIVER (2) CIVILIAN GENTLEMAN'S SWORD & HAT EXHIBITION MEDAL 1902 1903 COMMEMORATIVE PLATE 1904 FLEMING OSCILLATION VALVE 1905 PORTRAIT OF MARCONI (4) WIRELESS SPARK GAP FLEMING VALVE (1) FLEMING VALVE (2) 4 VOLT FLEMING VALVE 12 VOLT FLEMING VALVE 1906 TUNING CONDENSER (2) ROTARY SPARK DISCHARGER 1907 MAGNETIC DETECTOR MULTIPLE TUNER MULTIPLE TUNER & MAGNETIC DETECTOR TUNED FIELD TRANSMITTER BELLINI-TOSI RADIOGONIOMETER BELLINI-TOSI DIRECTION FINDER 1908 EXHIBITION MEDAL 1908 1909 PORTABLE DECREMETER 1910 INSULATOR: 'BRADFIELD' LEADING-IN INSULATOR SIDE-LEVER MORSE KEY MAGNETIC RELAY KEY CRYSTAL RECEIVER TYPE 31c CRYSTAL RECEIVER TYPE 31c: AERIAL TUNING INDUCTANCE COIL CRYSTAL RECEIVER 31 OPERATOR'S WATCH TELEPHONE ARC TRANSMITTER MARCONI WIRELESS DIRECTION FINDER MARZI MICROPHONE 1911 PERFUME BOTTLE 1912 PARABOLIC TRANSMITTER PORTRAIT OF MARCONI (2) PORTABLE AIRCRAFT SPARK TRANSMITTER SILVER TABLE LIGHTER 1914 PROOF PRINT OF MARCONI PORTRAIT OF MARCONI (3) TYPE CA' TRIODE VALVE 1915 TUNING CONDENSER (1) 1916 CRYSTAL RECEIVER TYPE 16 VALVE AND CRYSTAL RECEIVER DIRECTION FINDER 1917 SHORT WAVE RECEIVER MODIFIED CRYSTAL VALVE RECEIVER 1918 AMPLIFIER TYPE 91 1919 AIRCRAFT WIRELESS TELEPHONE TRANSMITTER PORTABLE VALVE TRANSMITTER 1920 BUST OF MARCONI SPARK GAP TRANSMITTER (2) MARCONI RECEIVER TYPE 226B MARCONI LIFEBOAT TRANSMITTER SEVEN-VALVE RECEIVER COLD CATHODE RAY TUBE WIRELESS TELEPHONE SET TYPE TT2 AMPLIFIER & DETECTOR DIRECTION FINDER TYPE 11f VARIOMETER SPARK GAP TRANSMITTER (1) 1921 AIRCRAFT WIRELESS RECEIVER SYKES MICROPHONE 1922 MARCONI FIVE-VALVE RECEIVER MARCONIPHONE CRYSTAL JUNIOR RECEIVER HEADPHONES FOR CRYSTAL SET CRYSTAL A RECEIVER KRYHA CIPHER MACHINE INSTITUTE MEDAL 1922 JOHN FRITZ MEDAL 1922 1923 MARCONIPHONE TWO-VALVE RECEIVER TYPE V2 MARCONI OTOPHONE 1925 MARCONIPHONE UNIVERSAL BABY CRYSTAL RECEIVER MARCONIPHONE TWO-VALVE RECEIVER TYPE 21 1927 ENRICO SILVANI MEDAL 1928 DIRECTION FINDING RECEIVER TYPE AD 16 MARCONIPHONE SCREENED GRID SIX RECEIVER TYPE 61 1929 MEDAL FROM ROERICH MUSEUM 1931 CARICATURE OF MARCONI 1947 MEDAL OF INTERNATIONAL MARCONI CONFERENCE 1950 THE YACHT ELETTRA 1951 MEDAL OF PORTUGESE MARCONI COMPANY PORTRAIT OF MARCONI (1)