1/64 MUDDY John Deere 4430 WF Tractor w Gold Coin - Ertl Premiere #15 (2008)
Ertl randomly inserted "muddy" tractors in their production run. These are harder to find and highly sought after.
As of 2009 Ertl has produced 2 different Premiere Series of 1/64 tractors. There is an easy way to tell them apart. The first series comes with collector cards and the second series comes with collector coins.
With the second series the regular tractors come with a silver colored collector coin. It is the muddy versions that come with a gold collector coin.