This is called a Confetti marble These are Htf and they are Chinese origin from the 1930s but they are put with German handmade collections. It's like a single pontil cloud, These are the same category as those rare Chinese lightening strike marbles that are thousands of dollars.. . These don't come up often for sale. This was one of two from my personal collection. The marble surface is mint, however, she is .04" oor (.69"/.65")