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Test message slip for New Beam System
Full title - New Beam System England and South Africa, July 4, 1927. Purple code on cream slip of paper with handwritten details in pencil on the reverse : final test slip for the inauguration of England and South Africa New Beam High Speed Wireless System - short wave - July 4th 1927.
Collection Area
Industry
Item Number
34.219/5.1
Acquisition
Donation, 20/4/1934
Measurements
Length
(mm): 12
Width
(mm): 265
Material
paper
Location
In store
Classification
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