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Hagelin Pin-wheel M-209 → BC-38 → ← C-36
Like its predecessor, the device has five cipher wheels with fixed lugs.
It is slightly larger than the C-36 and has
more space internally. It is likely that it
was an experimental version that was developed in parallel with the
C-36/C-362.
Very few of these machines were made, as at rapidly evolved into the
six-wheel C-38/M-209.
The image on the right shows one of the few surviving units of the internal
collection of the British intelligence service GCHQ.
It was shown at the Enigma Reunion
at Bletchley Park in 2009.
Images have been kindly provided by GCHQ [1].
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The machine shown here has French text on its cover and was made for the
French market — probably the French Navy — by L.M. Ericsson (the telephone company)
in Colombes, just north of Paris, under licence of
the Hagelin Company.
A few years earlier, L.M. Ericsson had been licenced to produce Hagelin's first
cipher machine — the B-21 — for its South American subsidaries.
The C-37 was not only used by the French Navy, but also for French-British
liaisons, which is likely the reason for its presence in the GCHQ collection.
At present, no further information about the Hagelin C-37 is available.
If you know more about this device, please let us know.
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Device Portable mechanical cipher machine Class Pin-and-lug (pin-wheel) Manufacturer L.M. Ericsson Country France Inventor Boris Hagelin Predecessor C-36 Successor C-38 / M-209 Pin-wheels 5 Segments unknown Lock Cross, or cylinder Operation Lever Lugs Fixed Colour Black Dimensions ? Weight ? Quantity ?
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- GCHQ, Photographs of Hagelin C-37 shown on this page
November 2012. Crown Copyright. 1
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Reproduced here by kind permission of Director GCHQ.
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© Crypto Museum. Created: Monday 05 November 2012. Last changed: Sunday, 02 July 2023 - 07:01 CET.
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