Destruction of copies of Foreign Office Cypher K-1923 and its recyphering tables K-3 and K-4. Introduction of Foreign Office Cypher K-1925 with its recyphering tables K-5 to K-15

Keywords	London J.C. Walton Foreign Office Cypher
Ministry/ Department/ Residency	Foreign and Political
Branch	Cypher Confidential
From Year / Date (YYYY-MM-DD)	1926
To Year / Date (YYYY-MM-DD)	1926
Source Organization	NA
Identifier	PR_000006079732
File No./Reference No./Sheet No./Folio No.	File No. 44
Location	Repository-3
Part No.	NA
File Size	105.2 MB
Pages	64
Collection	Digitized Public Records Foreign and Political
Call Number	NA
Publisher	NA
Subject	NA
Creator	NA
Accession Number	NA
Series	NA
Year of Publication	NA
Language	English
Bundle Barcode	NA
Location Code	NA
File Barcode	NA