Shares in these companies are nothing more than wallpaper and trade on novelty value only.
This brings up a point... is it possible to get paper shares issued for these stocks?
Many times when I ride a company stock down to zero I wish I had gotten a paper certificate so at least I could hang it on the wall to remind me what could have been.
I do have a few paper certificates in defunct companies and some are quite attractive. They even have a value on eBay!