This is a special marble that Mark created to celebrate the release of Paul Baumann's 3rd edition of his "Collecting Antique Marbles" book back in 1999, signed specially with Paul's initials PB. Mark picked out an especially nice gem and this beauty is SOOOO flawless and wonderful from top to bottom! Pure perfection in an art glass marble whose style hearkens back to the early days of antique German handmade marbles. Don't miss your chance to own a VERY special piece of marble history that collects the past with the present and future!! Signed 'Matthews PB 1999'.