
Jon Baddeley
Specialist Consultant Collectors, Science & Marine
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Specialist Consultant Collectors, Science & Marine

Head of Department
The TC-53 cipher machine was developed by Dr. Edgar Gretener in Zurich about 1953 and was initially built for the Swiss Army but later supplied to other countries such as Austria. Based on the earlier TC-35 that was jointly developed by Edgar Gretener and Boris Hegelin.
For further information see: www.cryptomuseum.com/crypto/gretag/53/index.htm