I recently got a pan like this: http://www.kohls.com/product/prd-1305988/country-cabin-10-in... which turned out to be super-coarse. I ended up polishing it with an angle grinder and fine sandpaper, then seasoning the resulting smooth surface.

I haven't seen more high end antique pans first hand, but my understanding is that they were factory-polished, and that this step is somewhat costly.