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The E-Sylum: Volume 26, Number 53, December 31, 2023, Article 23

18TH CENTURY GERMAN CYPHER WHEEL

Secret codes make fun puzzles, and here's a numismatic connection. A medallic 18th-century German cypher wheel is described in this article by Stack's Bowers Senior Numismatist and Cataloger Jeremy Bostwick. -Editor

  18th Century German Cypher Wheel obverse 18th Century German Cypher Wheel reverse

Keeping sensitive information secure and data encrypted are omnipresent aspects in our increasingly technological lives, with two-factor authentication even more commonplace. While the level of tech behind such measures has advanced greatly recently, the reasoning behind them has been just as important no matter the period in human history. The need for relaying information in a secure, private manner has taken many forms—with one such method being the substitution cypher. In this form of encryption, one letter stands in for another, with the recipient of the protected data able to decipher its true meaning only by using a code or a key. Lot 52090 in our January 2024 Auction (in conjunction with the New York International Numismatic Convention [NYINC]) served this exact role.

Emanating from the Sydney F. Martin Collection, and previously from the extensive and celebrated John J. Ford Collection, this bi-level engraved silver cypher wheel features elegant engraving on each side. Additionally, one side displays names that indicate various functions within the hierarchy of the Holy Roman Empire. These are led by the Emperor and Empress (Imperator and Imperatrix), the Imperial Vicar, the various Electors (Archbishops of Mainz, Trier, and Cologne; King of Bohemia, Count Palatine of the Rhine, Duke of Saxony, Margrave of Brandenburg, and Duke of Brunswick-Luneburg), neighboring rulers such as the Kings of Sweden, Denmark, and Poland, and other higher-ranking officials in the German-specific power structure of the Empire.

Meanwhile, the other side presents a movable outer ring with the 24 letters of the Roman alphabet in order (J and V being omitted), a fixed inner ring with those same letters in a randomized order, and another movable interior ring that, when rotated, reveals a third letter in the cut-out area above the engraved ruins. The sum of this creates a level-two substitution encryption, and a code that would realistically only be deduced by the bearer of a decoder. Furthermore, the codes that begin and end each individual mentioned on the one side, such as the 1 and 15 for the Emperor, may indicate that any number between the two may stand in as a code for that particular official.

Given its mention of the Duke of Brunswick-Luneburg, this piece must be dated between the elevation of the duchy to electorate status (1692) and its takeover by Napoleon (1807). Additionally, mentioning the Imperatrix may further narrow the chronology to the reign of Maria Theresa and a more important role being given to a female within the normally male-dominated Holy Roman Empire. As such, this piece may more specifically be dated to 1740-1780. Beautifully crafted and attractively toned, it represents an extremely interesting piece of paranumismatica, made more appealing by its association with two phenomenal collections.

To read the complete lot description, see:
GERMANY. Holy Roman Empire. Bi-Level Engraved Silver Cypher Wheel, ND (ca. 18th Century). (https://auctions.stacksbowers.com/lots/view/3-17B20A/germany-holy-roman-empire-bi-level-engraved-silver-cypher-wheel-nd-ca-18th-century)

To read the complete article, see:
ENGRAVED SILVER CYPHER WHEEL FROM THE MARTIN & FORD COLLECTIONS (https://stacksbowers.com/engraved-silver-cypher-wheel-from-the-martin-ford-collections/)

Guth E-Sylum ad03 Expert Provenance Research



Wayne Homren, Editor

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