Skins from The Vertigo Collection are not obtainable through the weekly drop.
The Vertigo Collection is a Valve-made collection of CS:GO skins introduced on 14 August 2013. The collection consists of 2 consumer skins, 1 industrial skins, 2 mil-spec skins, 1 restricted skins, 0 classified skins, and 0 covert skins.
When the Vertigo map was added to the Active Duty map pool the following majors made available a Vertigo souvenir package. These souvenir packages became very popular as many players attempted to get their hands on the Souvenir AK-47 Black Laminate.