
The 3 in the first picture are Danish Madsen m50 mags.
I would be interested if he wants to sell them.

The others are PPSH43 mags.

Both of the photos above are of Argentine PAM2 mags. The oval cut on the spine indicates they have been converted for use in the M11/9. A little work and they can also be used in the SWD M10.
The Madsen mags can be converted for use in the SWD M11/9 or SWD M10 by adding a cut in the proper location on the rear spine.
I may also be interested in these two magazine types depending on the price.

Top set are Mac 10/9mm mags made by CMP, bottom set are Sten mags.