This marble is a cool piece of Kobuki history, coming from a customer order that John created clear back in 2001, a great slice of marble history from the Kobuki Early Years! This gem is from his early line of 'inside-out' marbles, and John hasn't made any of these in over 2 decades now. This is probably the nicest of John's inside-outs that I've ever seen, it is mesmerizing in hand, SO dang cool!