I'm just quoting Yori Yoshizuki here:
Could someone write at redump.org forum
these entries are dupes:
Beneath a Steel Sky (USA) (En,Fr,De,Es,It,Pt,Sv) (Alt)
Demon Gate (USA) (v1.2) (666) (Alt)
Final Fantasy VII (USA) (Disc 3) (Alt)
Just convert them from bin+cue to iso
then strip them down 307200 bytes
and voilà same as main dumps.
I haven't whole USA collection to check.
Usually many single bin+cue entries are overdumped with 307200 bytes.
Proggies used are not always exact with extraction.
My two cents