Description:

ENIGMA A28 CIPHER MACHINE INSTRUCTION MANUAL
Very rare imprint, a basic introduction and instruction booklet for the Enigma A28 cipher machine, developed in 1928 by Chiffriermaschinen AG in Berlin, and a progenitor of the military models M3 (adapted, 1938) and M4 (1942) . It was the first Enigma to use an alternative wheel stepping mechanism that is driven by cogwheels and pinions rather than the more common ratchet and pawl arrangement. The booklet is 8.25 x 5.75 in., 20pp. with a fold-out photograph of the features of the machine at conclusion. A rarely seen brochure describing the machine, its capabilities, its security features, as well as instructions for it's use. Very fine.

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November 29, 2023 10:00 AM EST
Elkton, MD, US

Alexander Historical Auctions LLC

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Bid Increments
From: To: Increments:
$0 $99 $10
$100 $499 $20
$500 $999 $50
$1,000 $1,999 $100
$2,000 $4,999 $250
$5,000 $9,999 $500
$10,000 $19,999 $1,000
$20,000 $49,999 $2,500
$50,000 $99,999 $5,000
$100,000 $999,999 $10,000
$1,000,000 $1,999,999 $50,000
$2,000,000 + $100,000