A closer inspection reveals that these instruments were made by Andrea Amati
(1566), his sons Gerolamo and Antonio (viola, 1615), grandson Niccol (1658), Giuseppe Guarneri (1689), his son Giuseppe Guarneri del Gesu (1734), and Antonio Stradivari (1715).
The great luthiers of 16th to 18th century Italy -- Andrea Amati
, Antonio Stradivari, Giuseppe Guarnieri -- understood subtleties that today's makers have yet to decode.
The Cremona school was founded by Andrea Amati
in about 1560; his grandson Nicolo became the family's most eminent craftsman.
The instrument was made by Andrea Amati
in 1564 and is a very rare survivor from the earliest period of violin making.