The item number for the Nintendo Selects edition of Super Mario Galaxy is listed as  
RVL-RMG1-USZ. Based on its formatting, it would be the disc ID if it is correct. None of the serial numbers on my copy quite match it, so I would like to verify if my copy is original or piecemeal, and if it is original, whether it is a separate release to the existing entry, or if the existing entry is incorrect. I should also note that my disc artwork does not have a reflective background, which from what I could find is typical for a NS release.
Nintendo ID on rear of box: 
RVL P RMG1 USZArtwork ID? on rear of box: 
75194ADisc ID: 
RVL-RMGE-USA-B0Booklet ID: 
64299CSuper Mario Galaxy - Nintendo Selects - 
https://vgcollect.com/item/21225