Current record mode: basic


107 of 655 records      previous / next

Marconi Radio Valve Type V24, by Marconi Company, England, c. 1919

Inventory Number: 25217

Date: c. 1919

Maker Details: Signed by Marconi's Wireless Telegraph Co. Ltd.

Inscription: "MARCONI'S W. T. CO. LTD. / Pat. appn. No. 28413-18 / MADE IN ENGLAND / COVERED BY VARIOUS PATENTS / 11295 V.24" printed on exterior surface of bulb.

Size: 70 mm in overall length

Materials: Glass, steel, assorted metals.

Other Given Number(s): Christie's 210.


Marconi Radio Valve Type V24, in thin glass envelope with caps at either ends, with grid and anode connections as envelope side pips, and single strand tungsten filament running entire length with a spring for tensioning. Construction was co-axial with helical wire grid surrounding filament and fitting within cylindrical anode. In this valve, 'U' shaped glass support holds two stout wire rods that attach to anode and grid respectively; thus electrodes are only supported at one end. Previously catalogued with assorted other valves.

107 of 655 records      previous / next

Record mode: Basic | Medium Images | Large Images | Documents (1)