Banque Cantonale du Valais, succursale de Monthey is rated 3 out of 5 in the category financial services. Read and write reviews about Banque Cantonale du Valais, succursale de Monthey. Banque Cantonale du Valais, succursale de Monthey is a financial services company based out of PLACE CENTRALE 6, Monthey, Switzerland.