Flaig's Barrels

[08Cayenne]

I have a custom build from many moons ago. Mauser 3000L action and a Flaig's .22-250 barrel. I bought the barrel new and was told it was a Douglas Supreme barrel. I know the history of Flaig's gunsmith, but what is the difference between a Douglas Supreme barrel and a Douglas Supreme Flaig's barrel? Just the Flaig's stamp?

Thanks
Frank