Ebay Northstar Horizon

I was just checking out some stuff on ebay (hanging my head) and ran across a Northstar Horizon that sold for $551.00. In it, the (fiction?) writer says: "Originally, the cases were wooden, but the company soon switched to a blue metal cover. Hence, those computers with original wooden cases are more highly sought after than those with the more common metal cases." Also: "The only known computer to be sold in a wooden case, this collector's item features its original, walnut-stained wooden case." Looks like some just plain wrong information, but ... 1) Were there more metal case Horizons sold than wooden case and did they "soon" switch to a metal case? 2) What other computers were sold in a "wooden case"? The Sol-20 comes instantly to mind as well as the Polymorphic 8010 and 8013 series of computers. How many others were there?