SWITZERLAND, Waadt (Vaud). Bistum Lausanne (Bishops of Lausanne) . Guillaume de Challant. Bishop, 1406-1431. BI Denier (14.9mm, 0.32 g). + SЄDЄS LΛVSΛn, five-columned church tower; annulet flanked by pellets below / LΛVSΛN : CIVITΛS, cross; pellet in first quarter; arrow in third. Coraggioni -; HMZ 1-487