Ric, I am not sure about this marble either! I have another one somewhere and always liked it. So I picked up this one also. Mine actually looks like it is corking! Here are some more pics, so you can see the cork! Do yours look like they are corking? The colors do remind me of some Ravenwoods I have seen. Check out the Ravenswood thread on this page, and look at the #2 post second marbles that are blue and orange. And tell me what you think! Windy