Eco-Cobra sticker easter eggs and references:
1. The design has an angular, aggressive style.
2. "Eco-Cobra" in competitive CS so called those who making multikills on opponents who have an economic round, and the player killing such opponents farm his money and stats. (Economic round is when a team does not have enough money for powerful weapons and they are not to buy equipment).
3. The shape of a cobra snake with a spear symbolizes the dollar sign.
4. The spear symbolizes an up arrow (the economy is going up). The blade of the spear repeats the design of the Skeleton knife.
5. The shape of the cobra snake also symbolizes the number "5", which means 5 kills (Ace).
6. The sticker is made in green colors, symbolizing the color of dollar bills.
7. If you scrape off the sticker will acquire a more distinctive dollar sign. As it wears down, it says "Beware the Eagles". In the wild, eagles eat snakes. Be careful not to become their dinner :)
8. Eco-Cobra is also a reference to the real anti-terrorist unit "EKO-Cobra" (Einsatzkommando Cobra) Wikipedia link: https://en.wikipedia.org/wiki/EKO_Cobra.

P.S. You can find many videos with the tag "CS Eco Cobra" on YouTube.

Appreciate the Foil version of the sticker:



Also check out my skin for Dual-Berettas. Vote if you like it :)