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
Secrecy notice in wood frame Secrecy notice in wood frame Secrecy notice in wood frame Secrecy notice in wood frame

License this image for commercial use at Science and Society Picture Library

License

License this image for commercial use at Science and Society Picture Library

License

License this image for commercial use at Science and Society Picture Library

License

License this image for commercial use at Science and Society Picture Library

License

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

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Large emergency Morse key, made by Marconi's Wireless Telegraph Company Limited, Chelmsford, Essex, England, 1900-1950

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