I think they are all probably Israeli magazines. It looks like the Israeli markings have all been scrubbed for some reason. The FN mags have no markings. Israeli mags seem to always have the two very visible (large) spot welds on the back near the top and bottom. FN mags, at least the ones I...
The black one appears to be Israeli. I don't have any with followers that don't have the two square cut outs, including my new in wrap FN mags. I have Israeli, Austrian, South African, and FN suprlus mags and none have bases with the two holes, either. Not sure what those are.