Secrecy notice for telegrams, 1900-1950

Made:
1900-1950 in Chelmsford
Secrecy notice in wood frame Secrecy notice in wood frame Secrecy notice in wood frame Secrecy notice in wood frame

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Secrecy notice in wood frame
On loan from the Museum of the History of Science|Enquiries to Science Museum, London

Secrecy notice in wood frame
On loan from the Museum of the History of Science|Enquiries to Science Museum, London

Secrecy notice in wood frame
On loan from the Museum of the History of Science|Enquiries to Science Museum, London

Secrecy notice in wood frame
On loan from the Museum of the History of Science|Enquiries to Science Museum, London

Secrecy notice in wood frame, made by Marconi's Wireless Telegraph Company Limited, Chelmsford, Essex, England, 1900-1950

Details

Category:
Radio Communication
Object Number:
1959-207
Materials:
paper (fibre product), glass and wood (unidentified)
Measurements:
overall: 270 mm x 210 mm x 15 mm, .4662 kg
type:
regulatory sign
credit:
Lent by the Museum of the History of Science