10 Euros - Jean-Paul Gaultier La Bretagne, breizh

This piece belongs to the "Regions of France" series for which Gaultier served as artistic director — an unusual appointment that gave a fashion designer direct influence over legal tender. Gaultier, born in the Paris suburbs, has long claimed a personal connection to Brittany through his grandmother, and the regional affiliation here is genuinely biographical rather than commercially assigned.

The .333 fineness places this well below sterling — closer to medieval billon coinage in silver content than to modern bullion issues.