Hello to everybody I have an old violin and i would like to have some opinions about the maker. For the moment i want to have an insurance but i don't know the value of the violin because it has no label inside. I have already contacted with some violinmakers and i have send some photos of my instrument and i am a little confused. One of them told me that it's Michelangelo Bergonzi, the second one told Giuseppe Dal Aglio and the third one Andrea Castagneri. Could somebody help me find out?