Vintage THORENS Music powder Box Silverite Co. Unknown date

Going thru an old box lot I found this Music box. thank goodness for the name being on the bottom Thorens, that kind of help me to research it a bit. Unknown the year of production or even the Material it is made from. It is Very Detailed and had a very soft tune that played. Appears to need some work on the music part though. Once it played down tried to wind it gently and feels like spring will not let it catch. Can not find the pattern as of yet. I will keep searching on collector's weekly for more information.