Glass filament electric light bulb. Pear shaped glass bulb with small glass nipple at the top. Situated within a copper alloy metal base with bayonet fixture for securing in a socket. The filament inside is unsupported and looped once. [MOBB [OPS move] 27/3/2017]

Collection type: Object
Description: Glass filament electric light bulb. Pear shaped glass bulb with small glass nipple at the top. Situated within a copper alloy metal base with bayonet fixture for securing in a socket. The filament inside is unsupported and looped once. [MOBB [OPS move] 27/3/2017]
Long description: Printed on the exterior of the bulb: 'ROBERTSON'. [MOBB [OPS move] 27/3/2017]
Geographical reference: United Kingdom of Great Britain and Northern Ireland
Europe > Northern Europe > United Kingdom of Great Britain and Northern Ireland; [England Oxfordshire Oxford]
Cultural groups: European
Person: Maker Robertson; Maker Robertson Electric Lamps Ltd; Field collector Unknown Collector; PRM source British Medical Association
Date / Period: Date made: Before 1904
Date collected: By 1904
Acquisition information: Donated: 1904, uncertain Found unentered: 08/1946
Materials and processes: Material Glass, Material Metal, Process Printed, Process Moulded, Process Blown
Dimensions: Length: max 95 mm, Diameter: max 60 mm
Object numbers: Accession number: 1946.8.129
Research and responses: See CJ Robertson, in biographies database [AP 02/05/2007]

Search terms: Lighting, Lamp