Chaigneau
“Brevete S.D.G.D” in french indicates a patent, registered without guarantee of the government. Lars Brandow emailed us also explaining that he believes the companys name is Chaigneau as it is stated at the top of the emblem in one of the pictures below. This is a french single wheel trailer built in Suresnes near Paris by Chaigneau. 3 Chaigneau trailers are known to exist.