A friend just told me it’s not 99, but a heart or star doodle. We know of a December 1999 Metro flyer that was signed by Billy Corgan, and he clearly wrote 1999 there. At the Machina era signing sessions in 2000 this promo cd was given away and sometimes signed. Also many Machina lithos were signed during these sessions. We have a few examples of them on SPfreaks in the Autographs section. Melissa kept her signature more ‘simple’ most of the times with just an X before and after MAdM. Good to know!
Billy Corgan, December 2, 2008 : "Not everyone understands our death trip. But you do. And that's what matters."