Are you sure the 1st ring has been confirmed ?
I have a cd with extra SID codes:
Ringcode Information:
Mastering Code (laser branded/etched): T-14415GP-01877<TAB>1MB4<TAB>C<TAB>7X
Mastering SID Code: IFPI L223
Label-Side Mould SID Code:
Data-Side Mould SID Code: IFPI 3905
Additional Mould:
Toolstamp or Mastering Code (engraved/stamped): [none]
It was probably before the IFPI fields were added 
Also from the comment, 1MM1 is really 1MM1 C 7X.
Fixed mine.
Madroms wrote:
Also from the comment, 1MM1 is really 1MM1 C 7X.
And IFPIs? And the Disc 1 1MM1 IFPIs?
F1ReB4LL wrote:
Fixed mine.
Madroms wrote:Also from the comment, 1MM1 is really 1MM1 C 7X.
And IFPIs? And the Disc 1 1MM1 IFPIs?
Yes probably. But I gave you the information taken from my own DB where I didn't track all the IFPI.
For IFPI, I need to find the disc. Maybe later.