Has a ton of sublablels/series. (What's the difference anyway?) Does not appear in logo form itself, so it shouldn't be used as an actual release label.
The trailing three digits of the cat#s of the sublabels are price codes (PC). Doesn't hurt to include them.
Many releases are issued multiple times across Europe with different rights societies: GEMA, OSA, ACUM, MCPS, etc. They all warrant separate entries.
The "official" status of any of this company's releases is questionable. They often release music where the copyright has expired according only to European law, other releases might simply infringe on generally non-expired copyrights.
Not related with the American label "International Music Co."