Hi Craig
Just got through my six pack of Heineken, what an ordeal, the weather was hot the sky blue and the beer cold, well you how it is.
So I cleaned out the can's as best I could and was about the start cutting when I checked through the pics. The ones on the site show a can with ribs. These have ribs top and bottom but also a raised panel for the label joining the two. So there is no clean ring as such to cut.
I think it's either a design / marketing change or the difference between exports. I have to go hunting to see if I can find one that exactly matches the one on the site.
http://www.garoo.net/photos/2003/08/20030819-heineken-02.jpg