Marconi-Osram Radio Valve Type DET 1A, by Marconi Company, London, 20th Century | |
| |
Inventory Number: | 64933 |
Object Type: | |
Place Created: | London England United Kingdom Europe |
Accession Number: | 2004-9/475 |
Brief Description: | Marconi-Osram Radio Valve (or Tube) Type DET 1A, with large glass balloon envelope. Unusual form of base: square red composition base with brass? base pins at four corners. With vertically-mounted nickel-plated anode and interior filament. Previously catalogued with Siemens & Haske Radio Valve Type RE87 (Inv. Num. 69068), GPO Radio Valve Type No 2 (Inv. Num. 26614). |
Primary Inscriptions: | "MARCONI OSRAM VALVE / MADE AT THE OSRAM LAMP WORKS / COVERED BY VARIOUS PATENTS / MADE IN ENGLAND / Y" printed on the exterior surface of bulb. "DET1A / 22" printed on the exterior surface of the bulb. |
Provenance: | Presented by the Marconi Corporation. |
Collection Group: | Marconi Collection |
Material(s): |
Glass nickel-plated brass plastic? assorted metals. |
Narratives | |
Permalink: http://www.mhs.ox.ac.uk/object/inv/64933