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Test message slip for New Beam System
Full title - New Beam System England and India, August 25, 1927. Purple code on cream slip of paper : speed test slip for the inauguration of England and India New Beam High Speed Wireless System - short wave - August 25th 1927.
Collection Area
Industry
Item Number
34.219/6.1
Acquisition
Donation, 20/4/1934
Measurements
Length
(mm): 12
Width
(mm): 465
Material
paper
Location
In store
Classification
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