SHOWCASE
10
Field
Telephones of WW I
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TF1
(exact model unknown) - Field telephone with magneto
signaling made by N.K. Geissler and Co., Saint-Petersburg,
Russia, between 1912 and 1914. To
be continued after the picture set...
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WHD
= 310 х 230 х 140 mm, weight (less battery) 5.8 kg.
The
place of manufacture inside the telephone set was indicated
as "S.P.B." which used to be an acronym for
Saint-Petersburg, the capital of Russia at that time. The
"S.P.B." letters gave us a clue to determining
time of manufacture of that particular field
telephone. It
is widely known that the name of Russian capital,
Saint-Petersburg, was changed to "Petrograd" when
Russia declared state of war with Germany in August, 1914.
On the other hand, it is known that Nikolai Geissler started
his new telephone factory in Saint-Petersburg in 1911. Based
on those facts, we have evaluated the time of manufacture
for this field telephone set as 1912-1914.
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