I checked and those are the same versions that are on the Write/Paint Tour disk. The System and Finder on that disk are also the same, except that they were both last modified on December 15, 1983. The creation date for the disk itself, however, is December 14, 1983.

I tend to think that bodes fairly well for your disk. It would not be impossible to take the Tour disk and make this disk, but getting those various "Last Modified" dates would be tricky and somewhat pointless, especially the Finder, not mention setting the creation date of the disk itself back. And you would have to have knowledge of what the stamp used on Mac test disks looked like. Seems like something that might appear as a fraud on eBay next month (now that what these things are supposed to look like is common knowledge), but not yet, and not buried in a pile of other disks! I don't have a problem with it being a blue disk or not having the Apple-logo label -- making it look like those MacRumors disks is what the fraudster will do...