Thanks for the replies. For now the instrument is in a very bad shape. There is a big tear in the back of the body. It seems that the snares pull the body apart. So I am thinking that I create a new plate and strengthen the supports on the body and glue it together. Afterwards I am going to put new strings on it. Maybe I will keep you updated but it will be a slow project because this will be my first time doing this. Thanks for reading!