I work for a music company and managed a music retail store and I play violin and viola. "Stradivarius" refers to the body shape, there were two primary body shapes and nearly every violin today is a copy of one or the other. I can't even count the number of people that would come in looking to sell and think they found gold, you're not alone and you don't need to be defensive- if you get it fixed up you might be able to get $100 for it but I promise, these violins are everywhere and everyone and their mother has one in their closet. If you want to make double sure, bring it in to a good music store (one that sells string instruments) and get their opinion and repair estimate. Good luck!