Some of the lightest double-barreled shotguns were produced by Bretton. The French inventor Georges Bretton relied on O/U with the fixed barrels ( fr. – canon fixe). He received his first patent (from many dozens of different countries) in 1931. Igor R. Karklinsh www.shotguncollector.com
Charles-Auguste-Theodor Lève patent of 1927.
Photo: Wolfgang von Brauchitsch Igor R. Karklinsh www.shotguncollector.com
Charles-Auguste-Theodor Lève patent of 1927? Looks like a Darne to me. Maybe Steve knows the history. I have heard of this mocification in sliding breech guns before.