This is the 15th Anniversary Shadow the Hedgehog themed guitar!
There have been other Sonic theme guitars in the past, but for whatever reason this one is rare-er and more expensive than others. It's quite cool! It has Shadow jumping away in full color on the body of the guitar, with red & black background. There's a Shadow logo above him & also on the top near the screws that adjust the strings. The tiny text there next to it says "15th Anniversary" The items you see to the right of it are the certificate of authenticity, a pick, & a cleaning cloth with the Shadow symbol on it. It's unknown how many of these were made.