Skins from The Rising Sun Collection are not obtainable through the weekly drop.
The Rising Sun Collection is a Valve-made collection of CS:GO skins introduced on 26 May 2015. The collection consists of 5 consumer skins, 2 industrial skins, 3 mil-spec skins, 4 restricted skins, 1 classified skins, and 1 covert skins.
The Rising Sun Collection was available as a weekly drop to players who held an operation pass for CS:GO operations Bloodhound in 2015, Wildfire in 2016 and made its final appearance in 2017 for Operation Hydra.