It's acid etched. It was advertised as a 1968; if it was American it would probably read N2 on the base plate. Incidentally, I have an N2 Travel Tech.Just out of curiosity
I have the same razor, got it recently as Ebay Bargain.
How have you managed to date it to a particular year? Has yours got an embossed Gillette logo or a etched logo?
Just interested to see if I could date mine too, that's all!
Thanks
Chris!