Original: Bell's instrument is a 300-year-old Stradivarius violin called the Gibson ex Huberman, which was made in 1713 during what is known as Antonio Stradivari's "Golden Era."
Simplified: Bell's violin is a 300-year-old Stradivarius violin called the Gibson ex Huberman, which was made in 1713, a time when Stradivarius was making his best instruments.