The Perron
The symbol of the city of Liège is the 'Perron' at the 'Place du Marché'. The original Perron had been demolished by Charles the Bold of Burgundy. Mary of Burgundy, however, had it reconstructed. The present Perron, designed in 1697 by Jean Delcour, consists of a octagonal fountain with arcades in which a column, carried by four lions, supports the Three Graces who carry a pine cone.
Using the perron as the proof mark would be the equivalent of using the Statue of Liberty if the US ever had a proof house.
Pete
