I gave the forums a search but didn't find what I was looking for:

I have an opportunity to buy a Rolls Razor on the cheap. It comes with a case, the inside has a strop and the back has a sharpening stone.

I realize the strop wouldn't be helpful for stropping a straight razor because the straight wouldn't fit inside the lid of the case, is anybody familiar with the design of the stone? Would I be able to use that as a stone for my straight instead of shelling out the cash for a norton 4000/8000?

Thanks in advance