Ok, I don't see it, but will let Rob answer, as he's much better than me with the numbers.

Lex

email (option): welbike@outlook.com

Nathan,

The digit "7" Norton used had a curved vertical line. I do not see that in this case.
Having about 170 pictures of Norton frame numbers and nearly 300 engine numbers I think have sufficient reference to stick to my previous statement.
I therefore stay with my previous information.
There is not much more to tell.

Cheers,

Rob

email (option): wd16h@telfort.nl

Ok that’s good to know. Thank you for your time and info.
Regards
Nathan