The Dublin company was founded in the 1910s and had a black swastika on a plain background on its chimney and livery. There's a load of other instances (including a division of the US Air Force up to the late '20s) of innocent usages around Europe before its being hijacked. That picture is actually from a mock-up for a reconstruction, it's the only one I could find, and as Benzo-13 says, it's not the original livery ? it's Nazified (white circle on red) as you say, and probably for dramatic effect. But the maddest thing isn't the pre-war use of the swastika ? name and symbol ? it's that it was on their stuff for years, until the EIGHTIES, and it's quite well known.