I couldn’t find any good quality 1920×1080 (so called ‘full HD’) desktop wallpapers featuring either Atari ST GEM or Commodore Amiga Workbench 1.3. So, assembled from parts taken from various images on google, scaled with correct aspect ration maintained, tidied and assembled to fill the full resolution and with no JPEG compression artifacts – here we are:-

You’re welcome 🙂