Some capsules of it were released twice ingame but the devs removed it, and I don't know the reason, but I managed to get it perm with ap stats.
That set is called Basic Type A, there are multiple colors for it and it was used as the default set back when the game started. For some reason the bracelets and the shoes textures have been removed and overwritten by the current default set ones.
The different colors
Old bracelets and Shoes: