These are sketch cards done for Topps trading card company for the Star Wars 30th Anniversary card set. They commission artists do do hand illustrated cards that are then randomly packed in with the trading cards so customers have the chance to pull an original peice of artwork when they buy packs of cards. I was only able to do 50 cards due to other work commitments so the odds of pulling one of my cards is 1:9800+ packs but you could still pull an original piece of artwork from any of the other 2 dozen artists that contributed sketch cards including Adam Hughes, Phil Noto, Cat Staggs, and Allison Sohn. All in all, your odds of pulling a sketch card from any random artist comes to about 1:150 packs.
All my cards were drawn at about 2.5X3.5 inches(roughly the size of a baseball card) using traditional media including pencil, ink, copic markers, prismacolor, and acrylic paint. Each card took between 15 and 45 minutes respectively.
Hope you dig!