A violin made by the Gagliano family in Naples and a bow made in Jean-Baptiste Vuillaume’s shop.

In Phoenix, ANTIQUES ROADSHOW host Mark L. Walberg and appraiser Natalie Linn visit the Heard Museum to discuss American Indian basketry. Valuable find: A violin made by the Gagliano family in Naples in the early 1800s and a violin bow made in France in the shop of Jean-Baptiste Vuillaume — the pair estimated to be worth between $72,000 and $94,000.