Did Antonius Stradivarius make any violins in Czechoslovakia?

No, Antonius Stradivarius did not make any violins in Czechoslovakia. Stradivarius was an Italian luthier who crafted his instruments in Cremona, Italy, during the late 17th and early 18th centuries. Czechoslovakia did not exist as a nation during his lifetime, and his violins are primarily associated with his Cremonese workshop.