Lucky by 64 Colors
From My Little Wiki
This was formally a blank white, 18", vinyl pony made by Hasbro. It is a one of a kind, customized by 64 Colors for the My Little Pony Project 2012. This is a charitable event, with 10% of the sales being donated to Give Kids The World. The event was hosted by Toy Art Gallery.
This pony was for sale for $3,000.