Gazelle headset question

[strith]

I need a new headset for my gazelle champion mondial, but I'm not sure if I need an ISO or JIS type. Could someone enlighten me please?

It currently has a 1992 Gazelle anniversary edition headset along with a ultergra tricolour groupset, so I'm assuming its a 90s frame.

Thanks.

 

[Elev12k]

ISO

Is it a Jubilee frame?

 

[strith]

No I it's not a jubilee frame. It has a normal fade paint job, just a standard AA-special. It's a great bike.
Thanks very much for the info.