Here's another one that divides the camps in terms of the title. These have always been called experimentals. New school says, stop calling them that, Akro didn't make experiments. Old School says, well what do you think it is when it doesn't turn out like they wanted and they all went in the dump and weren't made as a run? An experiment that didn't work out. Honestly. It's just semantics. A rose by any other name would still small as sweet. And that's all I have to say about that! Lol OK, so these are all dug marbles without exception. All of the ones I've had to date have had a much darker base glass and are difficult to enjoy as it is literally just a dark marble in hand. This one is a little bit of an exception to thr rule.. Base glass is a bit lighter and shows more clear area, therefore giving the marble quite a bit of definition and quite enjoyable to view in my opinion. Lights up bright UV. Just one tiny tic