Lionel Messi Signed FC Barcelona Soccer Ball. An incredible collectible for fans of the “GOAT”:an official FC Barcelona themed soccer ball hand-signed by Lionel Messi (LM10). This vibrant lime green ball features a bold, permanent signature and the iconic Barça crest, making it the perfect centerpiece for any sports collection or fan cave. Color: Lime Green / Blue. Condition: Excellent (See high-resolution photos). Authentication: Accompanied by a Certificate of Authenticity (COA) with a matching serial-numbered hologram.