Board Thread:General Discussion/@comment-4196571-20150610165307/@comment-1824272-20150610205459

Special limited-time drops like the Rafale M skin are in gold drops.

I've never heard of 6x Stocked Fuel, but I know that 5x Stocked Fuel is from a gold box because of how rare and helpful it is.

30x Special Supply Tickets is in a gold box for the same reason as above, it's more than usual from the drops and slightly rarer.