chrisf

I am new to marble collecting so I don't know if I am right. To me they look a little like the M.F. Christensen Slag. On some of them there is a pretty clear "9" and there is a seam on the bottom of all of them. They measure 5/8", although there is some very slight variation among them. They are transparent red, with opaque white and opaque orange. Some of them don't seem to have any orange, just the red and white. Was I close? Any ideas what they are? Thanks