I have an unusual CoCo 2...it was produced as a kit form. I bought it at a RS tent sale in Dallas in 1985-86. I thought it was a plug in the boards kit, but when I got it home it was totally bare boards. Took several hours of soldering to complete. I was told by a friend who was a RS manager, that they were a pilot program for schools to have classes assemble the machines and then the school would have alow cost path to getting more computers. Tandy later decided that this would be a warranty nightmare and sold the kits for $20 at the tent sale.