Dismantle the giant magnet on the roof of the building.
it is 3568
Mission 3? You can see it on youtube.
On the ceiling of the vault because of a giant magnet caused by Herbert!!
See the related link.
It is different every time you go on the Missing Coins mission in Club Penguin.
Just Go To This Website For A Full Guide On "How To Complete The Case Of The Missing Coins - Mission 3" The following is NOT a link http://www.club-penguin.org/club-penguin-mission/club-penguin-mission-3-case-of-the-missing-coins.html
In G's droor
For Mission 3, go back and talk with G.
There is no way to get 100000000 coins on Club Penguin.
Yes there is a secret mission on Club Penguin.
Search on Google for 'Case of the Missing Coins Walkthrough.' The best ones are youtube videos
nail two pieces of wood across the the out side of it.