PS3 Final Fantasy XIII Question

[HomerEightSeven]

Hi, I have two copies of Final Fantasy XIII, one from near release and one I purchased recently. Both are non-platinum EUR-UK versions BLES-00783 and both have the same barcode. But eath disk has a set of different numbers on them:

Copy 1:
IFPI LY23 A0101504045-A911 12000 - Outer Ring
IFPI LY26 A0101504045-B911 13000 - Inner Ring

Copy 2:
IFPI LY23 A0101504045-A911 11000 - Outer Ring
IFPI LY26 A0101504045-B911 7000 - Inner Ring

My question is why are the numbers I've bolded different on each copy? E.g. Copy One has 12000 and Copy Two has 11000.

I know it might be a stupid question as they may be production numbers or somthing but I'm interested to find out and all my Googling has resulted in nothing so this seems the place to ask.

Thanks.

[iR0b0t]

I think its a machine number on which they were pressed, I would say the first thousands number (7,11) is machine#, the rest is reserved for some other unused purposes.

[HomerEightSeven]

Is it possible the higher the number would mean the game was printed later? Or is it just a random machine number?

[iR0b0t]

they are random

[HomerEightSeven]

Thanks for your help I appreciate it 

[Xayox]

Hi HomerEightSeven
Can you please dump your disc and write down the Edition and Bar-/Ringcodes to verify my dump? https://redump.info/disc/13902/
thx