>>43378682It's the stuff contained here; anonfiles com/DfN8f8tfo5/CG_zip
Essentially, all these sprites were in the Korean Gen 2 files. These seem to constitute the earliest Gen 2 content that was being made at the same time as US Blue version, so pre '97.
This also explains the difference in several sprite artstyles. The most polished of these were reuses in the '97 space world demo, which were more or less concurrent with Yellow's development. The sprites moving from pre-'97 and 97 itself seem to represent them selecting what works, and discarding what didn't look good. Also, moving from the look of the Blue/Red aesthetic to what eventually was deemed decent enough for Yellow then release Gold and Silver.
