N15CS numbers

Trying to find out where N15CS numbers are stamped on the frame
Google gives various locations which seem to be guesses by people who don’t own one
So …… is there an owner out there who can tell me …….. please
Mine is on the left side of headstock, stamped down with six vertical digits
Thanks Richard

Yes that's where it is.

Hortons Norton said:

Yes that's where it is.

Click to expand...

Thanks for that …..