This is one of John's early ocean bottom marbles which he no longer makes and hasn't made for years (and says he won't make more). These are very hard to find, and a special gem for the Kobuki collector. This one features some of John's ghost anemone on the coral, apparently a harbinger of the damage that was to come to the coral reefs in the years after John created this. Very cool marble, don't miss this one! This piece is pre-2003 so it is unsigned.