It looks like the side was sponge painted.

“Original 6 volt system. Upgrades include: new brakes, shocks and lock-out hubs. Recently installed spare tire rack, not in picture. Has built in tool box. Runs great and is ready for the lease or ranch! Price is firm and fare for a Jeep Willys of this quality at $3,500. Can be seen in Gatesville, TX. I suggest you bring a trailer for transport to your house or ranch. The tires are great for the pasture but not good for the street.  Will respond to email or call TWO 5 FOUR-6 FOUR 4- FIVE 6 THREE 7. Please no scams.”

http://waco.craigslist.org/cto/2388504256.html