You'd have to have the instrument appraised to determine if it has any value.  However, bear in mind that during the 19th century and into the 20th century, student violins were made all over Europe, in a cottage industry, that was sort of a precursor to  assembly-line manufacturing.  Some parts would be made in one home workshop, some parts in another and then the parts assembled and finished yet somewhere else.  Labels, usually proclaiming that the violin was a Stradivarius, were slapped into them and then they were exported all over the world.  As a result laws were passed during the late 19th and early 20th century requiring the country of origin to be placed on a label on the inside The vast majority of them have little value in today's market, since most were created as inexpensive student violins to begin with and will likely not have improved with age.   All of that aside, let me say again, that the only way to know if an instrument has monetary value, is to have it appraised.   To know if it has musical value, it must be played.