A 300-year-old Stradivarius violin, valued at $10 million, may have been discovered in Colmar, France. Expert Pascale Bernheim believes it to be the 'Lauterbach,' which was stolen by Nazi soldiers from a museum in Warsaw in 1944. The violin was last seen in France during the early 1990s after enduring years in East Germany. Bernheim's investigation links the instrument to Polish industrialist Henryk Grohman, who owned it before the war. However, concert producer Emmanuel Jaeger disputes this claim, suggesting that the violin showcased at a recent concert is a different Stradivarius from 1719. The uncertainty surrounding the violin's identity continues as Bernheim seeks to confirm its origins through dendrochronological analysis. Stradivarius violins are highly sought after, with the 'Joachim-Ma Stradivarius' selling for $11.3 million at auction in February, underscoring the significance of this potential find.