Here's one I would NEVER sell if I didn't have one similar in the collection, as it is SO cool and SO unique and SOOOO rare. Ro made this one back in 1998 when he used to make various suphide marbles. The space shuttle or UFO was molded by Ro and hand formed afterwards, a painstaking process that he shared with me this year (2023). Seriously, ONLY Ro would create something as classic and wild as this. What's great about Ro's sulphides is that he didn't do the basic clear encasement like so many others have done over the years, but he went much further with the concept. In this case, there are space murrini inside the marble which you have to explore in order to discover them all inside there. The marble is backed in cobalt blue, and then on the backside, you find lots of other space murrini as well. It's just a fantastic design, and it's one of those legendary marbles that you may never get another chance to acquire. Heck, this is the first one like this I've ever sold, and only the second space sulphide sold, after the Man in the Moon. This one is from the eaaarly days of the marble movement, a historical classic, signed with a signature chip, 'Ro 98'.