I came across this yesterday - a Stentorian HF1012. It's a 12 inch full range unit, built into ths interesting cabinet. Haven't tried it yet - will take out my philips el84 integrated amp for that. The speaker has four connections and by shorting combinations of these you can get a 4, 8 or 16 ohm speaker. Pity there's only the one unit, so mono system only at this point.
Here are some pics of the unit I have
Here are some pics of the unit I have