My son and I have a game that is slightly older than he is, which is in a limited-edition set. The set is Jet Set Radio Future with Sega GT 2002 (full, playable games) that came with the original X-Box back in the day. The volume label when placed in the disc tray is "X-Box Demos".
By sheer luck, the two games and all of their very dated game preview videos for things like Buffy the Vampire Slayer work flawlessly on the XBox 360. Not all original X-Box games work on the 360, and that something so explicitly niche worked in the emulation provided by the 360 without problems was a shock. The disc is without any damage and a good time has been had by all.
Since the only thing we really play on the disc is JSRF. While Jet Set Radio exists on Steam, this is not the same game. With concern for the age of the disc and potential damage from use, I looked up just the cost of the JSRF disc (not the disc I have, I couldn't find that anywhere). It's "one of those" games where another 16-year-old copy costs exponentially more than a retail game now. I'm not sure if the copy I have is worth more or less to collectors, which is why I also asked about value. I doubt I should insure the disc, but if it's crazy rare, maybe?
Is there a way to make a backup copy of the disc which can be used instead, or install the game onto the XBox 360 HDD and run it from there instead of using the disc? I know 360 games can be installed, and usually just check the disc for DRM purposes before reading off of the fixed media, but I don't know if we can do that here. If not, both my son and I use emulators to play games without the use of aging and broken consoles we've had; is there an emulator which could read an .ISO copy of this disc? We already own the game and physically possess both consoles, so licensing shouldn't be an issue.