DICCIONARIO Cryptographico especialmente coordenado para a correspondência official. 1890

Lot was removed from auction

DICCIONARIO Cryptographico especialmente coordenado para a correspondência official. Lisboa: Typographia do Instituto Geographico Portuguez, 1890.

[8], 238 pp.; 200 mm. Encadernação da época inteira em precalina; títulos a ouro na lombada e pastas.

Muito curiosa publicação com o objectivo de servir de elemento para a encriptação de correspondência privada. Cada grupo deveria escolher uma numeração de páginas aleatória através da qual seria possível identificar as palavras escritas mediante a indicação do número de página e correspondente número de palavra.

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