It was one of the Swiss delegation, Pastor Humbert Droz, from La Chaux de Fonds, whose report to MI6 in London appears on the file.

BBC: Secret files reveal Franco plot

Today, La Chaux-de-Fonds remains the administrative, and in many ways the spiritual, heart of the Swiss watch industry.

BBC: Where the world��s most expensive watches are made

More than that, La Chaux-de-Fonds is essentially the watchmaking capital of the world, home to the workshops or corporate headquarters of Rolex and Patek Philippe, Tissot and Girard-Perregaux, Ebel and Omega, many of which were founded here.

BBC: Where the world��s most expensive watches are made