CDs manufactured by CD Systems (my collection only)
updated 6 months ago
The project codes on mine seem quite sequential but if you look at the CD Systems page you can see they're really not.
IFPI LD11 to LD20 / 5Qxx ... this is on the Redump Wiki as CD Systems UK but it's unclear if they were still around and operating under that name on the releases where these codes appear. For now, I am listing them here since I would include the successor company here anyway.