Some translation
Photos : on the left, a craftsmen which clearly announces the color with "propeller closure". Right hand A Verney-Carron having developed its own system "Gripp Hélico". It will be noted in the one case as in the'Other The quality of engravings, in particular on the shells of the Verney-Carron.


USAF RET 1971-95 [Linked Image from jpgbox.com]