** An outstandingly rare WW2 Restricted military intelligence report, every distributed copy with its own unique security number, this being 'Copy No 271'.
Very few examples of this classified and security-numbered report have survived and only a tiny handful are privately-owned.
An 'ordinary' version of this restricted 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 RESTRICTED report Copy No 271 Photometric Procedures used in Research and production of German Pyrotechnic Ammunition
CIOS Intelligence Report. XXXII-1. Combined [British/US] Intelligence Objectives Sub-Committee (CIOS). June/Aug 1945.
** The CIOS WW2 report on the German "... interesting and novel procedures for measuring the colour and intensity of the light emitted by pyrotechnic flares and signals".
CIOS 'Black List of targets for urgent investigation' category: Bombs and fuzes; Incendiaries and pyrotechnics
Duplicated typewritten report in English, 10 x 7.5 inches, 25 x 19 cms. 19 pages, 2 photographs, 2 sketches, 2 charts.
Very good in original stapled card wrappers. Protected in a modern clear archival jacket.