Looks like I found the ad for the guitar you just bought.
 Commodore name was a brand name used by whatever distribution company imported the guitar from Japan.  I can't find any info on that company,but they did not actually manufacture the guitar. The pickups and tailpiece  are  the same as those used on other brands of guitars,such as Aria and Univox,that were manufactured at the Matsumoku  factory. Also,I'm pretty sure you'll find the body is solid wood,not ply. I have no doubt that your guitar was made by Matsumoku.
Edit - I found a picture of the Matsumoku made Aria Diamond version of  the guitar. As you can see,they are basically the same.
