** An outstandingly rare WW2 Secret military intelligence report, every distributed copy with its own unique security number, this being 'Copy No. 240'.
Very few examples of this classified and security-numbered report have survived. Because of the report's extreme rarity, few collectors know these documents exist; only a tiny handful actually owns one.
An 'ordinary' version of this secret CIOS intelligence report was subsequently authorised for issue. The later version was given the same title but had the HMSO name as publisher on the front cover and lacked the security classification and unique identifying security numbering.
WW2 SECRET report Copy No 240 Special Alloy Steel Manufacture and Centrifugal Casting of Alloy Tubes and Gun Barrels
CIOS Intelligence Report. XXXI-46. Combined [British/US] Intelligence Objectives Sub-Committee (CIOS). July 1945.
** SECRET Copy No. 240 of the CIOS report on the German WW2 Hochfrequenz-Tiegelstahl G.m.b.H plant at Bochum.
CIOS 'Black List of targets for urgent investigation' category: Metallurgy
Duplicated typewritten report in English, 10 x 7.5 inches, 25 x 19 cms. 18 pages including 12 pages of tables of materials and quality standards.
In near perfect unmarked condition in original stapled card wrappers. Protected in a modern clear archival jacket.
With the A.R.C. (Armament Research Centre?) Library stamp.