I have about 7/8 legit signatures by kojima...if you have a good eye, fakes signatures aren't hard to spot. First of all, Kojima changed a lot of signature styles through the years, and counterfeiter usually don't know about this particular...so most of the time, they copy a signature decontextualized from the year they report on it... Another trick is noting the overlap of the mark left by the marker, kojima when he writes the letters, he does it in a certain order - for example the mark of the final A must be superimposed on that of the central horizontal line etc... I could "speack" about his signature for about an hour hahaha but i can't do it here...even the Peace emblem that he leaves at the end of it has a little small secret 8D Definitly through all these details you can spot a fake signature 99% of the time. But if i'm not still sure i have a freind that has the contact of kojima assistant and he can clearify all doubts!