Valais thaler is a currency that was used in Valais, Switzerland in the past. A synonym for this currency could be "Valaisian thaler", which is a more specific term that refers to the same currency. Another synonym could be "Swiss thaler", which is a broader term that may include other thaler currencies that were used in Switzerland at the same time. A third possible synonym could be "crown" or "crone", which were also monetary units used in Valais and other parts of Europe. Regardless of the term used, it is a reminder of the rich history and cultural heritage of Switzerland and the role that currency played in its development.