This is a PAL Unit from the UK. The NTSC Units from the USA and Canada Have/had a daughter board on them. Also, the Commodore logo on the front is a dead give-away. None of the US versions had any Commodore labeling on them. Inside the top cover on all NTSC models is the signatures of the team, including Jay Minner's dog's paw print (misty) and "Joe Pillow"