Whilst checking through my games, I noticed that the part numbers on a few of the games are different. For example, most PAL PS2 games are in the following format: SLES / SCES 5xxxx (Where PlayStation games before them would have been: SLES / SCES 0xxxx)
For some reason though, certain games start with an eight instead of a five:
82013 ~ Metal Gear Solid III: Snake Eater (Same code for Metal Edition)
82042; 82043; 82050 ~ Metal Gear Solid III: Subsistence
Metal Gear Solid II: Son's Of Liberty is: SLES 50383 ~ Why is Metal Gear Solid III so unique?