Sears "Silvertone" type 247 vacuum pentode
date: label: date made
content: ca 1935
notes: label: Description (Brief)
content: Sears distributed these tubes but they were made by another company. A 5-pin plastic base with domed envelope. Stamped on base: "Silvertone / -247-42X." Paper label reads: "Retube with / 2-9-34 / Silvertone / Sears Roebuck and Company."
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from the United States Bureau of Standards, Dept. of Commerce
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.320206
label: catalog number
content: 320206
label: accession number
content: 188571
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: vacuum tube
label: Object Name
content: pentode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 3/8 in x 2 in; 13.6525 cm x 5.08 cm