Breaking Enigma Codes [100]

75th Anniversary of Breaking Enigma Codes

Subject: no
Face value: 100 pln
Alloy: 900/1000 Au
Diameter: 21 mm
Weight: 8 g
Finish: proof
Mintage: 8000 pcs
On the edge: smooth
Additional: no
Date of issue: 2007-03-21
Issue price: 740 pln
On the left and on the right, stylised light bulbs from the Enigma cipher machine, surrounded by two groups of circles reflecting beams of light. At the top, in three rows, letters of the alphabet connected by lines with two rows of letters below. Under the light bulbs, an inscription, 75. ROCZNICA ZŁAMANIA/ SZYFRU ENIGMY (75th anniversary of breaking Enigma codes).

Designer: Ewa Tyc-Karpińska
In the central part, an image of the Eagle established as the state emblem of the Republic of Poland. In the background, tables of letters and an outline of the Enigma cipher machine operation diagram. A semicircular inscription, RZECZPOSPOLITA POLSKA, the notation of the year of issue, 2007 and an inscription, 100 ZŁ. The Mint's mark, incorporated into the tables of letters, under the Eagle's left leg.

Designer: Ewa Tyc-Karpińska

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Article linked with this coin

75th Anniversary of Breaking Enigma Codes

The history of Polish contribution to World War II is generally known. However, relatively little is known about the Polish role in the "battle for secrets", i.e. in the reconstruction of the "Enigma", a German cipher machine, and in the development of apparatus that allowed the decryption of the code that was changed by the Germans on a daily basis. The structure of the replica was based on rotating cylinders with the letters A-Z on the circumference and on plugs providing an indefinite number of possible solutions. Without this apparatus, any attempts to decrypt the current key based on a small number of the messages would have been vain. Moreover, German land, marine and air forces used different codes.

At first sight, the Enigma encryption machine resembled ...

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