HHAEng ,
Thanks for the information. It was the engine note that made me look up(and rush to the window,are all aviation people so affected ?) and see a rare machine these days. I looked up in my Hunter books(signed by Bill Bedford) ZZ191 and as J-4058 Swiss AF it first flew on 25.6.59 by Don Lucey. Not bad for a nearly 51 year old aircraft.