Tonight I found what looked to me to be a small treasure, a cast iron cazuela with a Pyrex lid from a company by the name of Castey, from Spain. You can find their website at http://www.castey.com/ The piece I have is an individual cazulea, apparently from their "Classic" line, possibly model A22, from the number on the box. It is 22cm in diameter. The lid is one-piece molded Pyrex glass (borosilicate, I imagine) with a hole for an included knob made out of Bakelite, according to the included booklet, that is safe up to 230 degrees (one imagines this is Celsius, rather than Fahrenheit).
Upon inspecting the cazuela, I had initially assumed it was a pre-seasoned cast iron, but according to the website and the little booklet included, it's actually enamelled cast iron. However, the surface is quite rough, almost like what you would expect from say, a new Lodge Logic pan, but with the feel of sandpaper. It certainly doesn't feel like a seasoned bare cast iron pan, and there doesn't seem to be any bare metal edge the way some enamelled cast iron cookware has an exposed metal edge. The color is black all the way around, but I can't figure this thing out! I'm tempted to season the thing the way it is! One thing is for sure, if you look at the website, you can clearly see that the item in question is meant to have a rough surface.
Does anyone have any experience of Castey products? I've never heard of them before, but when I picked up the box, I could tell immediately it was cast iron, from the weight, so for 15 USD, I thought I'd give it a try. It's very attractive, in any case.