The pic on top shows what I think is a proper Norton International (M30-M40) front fork. It's got the two holes on top to fit a speedo, the legs are paralel and the brake anchor is on the right side. Note the lack of mounting holes for headlight brackets!
It's Rob's, and he would like to swap it against an approximately 1930 Webb fork such as the one in the lower pic. Contact me when you want to make a deal (for exchange only-not for sale).