Found! Actually the gift of an American colleague and dealer in ephemera- this hanging wall card for cycle parts from the French company Durex. Probably from the early 1950s, the company appears to be now defunct.... This poster may amuse some Brits as Durex is the pre-eminent maker of condoms in Britain. Durex is practically synonymous with condoms there in the way Hoover is with vacuum cleaners.
In the USA it is Trojans which, although not unknown in Britain, is also the name of several different companies on the sceptered isle including an electronics company, an arms dealer ( Trojan Group) and a timber crating company.
The arms dealer Trojan sells assault rifles with this quote from Voltaire: 'God is not on the side of the big battalions but on the side of those who shoot best.' Exactement.