Ok so UG has a different image:
Size (bytes): 607117056 (OK)
Size (sectors): 258128 (OK)
EDC in Form 2 sectors: YES
System area: US EDC
But how can we know for sure that this is a retail release? Or that it's really an older release? Maybe it's the Greatest Hits version! A newer exe date doesn't always indicate a newer version (see for instance GTA2 Europe).
The original edition (top picture) has some files and folders that are older than the unknown image.. Also, the files on the original edition image are newer than the actual release date, so maybe it's just an error.. Either way, maybe it's best to remove the version tag until someone dumped the Greatest Hits version or found a different original edition.