The new magazine actually looks identical to one of my dutch mags. I have a blued wood-bottom mag that it matches quite well, the markings on the button are identical, as is the pattern. the metal edges of the two tube parts are slightly rounded on the new mag, where mine are straight.
Both magazine tubes are unmarked, btw.
(see the image in the gallery at
http://gallery.rennlist.com/lugeralb..._M11/M11_2.jpg )