I came across a copy of Sega's "Subroc" for the ColecoVision that is the game and manual sealed in what appears to be the original plastic "baggie" that it came in.
So it's basically the game+manual sealed in a pouch. No box, etc.
I don't think it's worth very much, but I'm curious to just check and see if anyone has any insight.
Thanks for any info!