c. 1600—Legnano, Italy
A lunette painting by Giovan Pietro Luini in the Basilica of San Magno depicts an angel trombonist (see below image; public domain).
Late 16th century—Italy: A chalk drawing variously ascribed to Alessandro Allori, Agnolo Bronzino, the circle of Vasari, Baccio Bandinelli, Johannes Stradanus, and Bernardino Campi includes a man playing what appears to be a trombone among a group of musicians in a concert scene (see below image; public domain) (McCullagh 280; Art Institute of Chicago).
Late 16th century-1732—Venice: Trombonists appear on regular payroll at St. Mark’s (Guion, Trombone 4).
Late 16th century—Italy: Bolognese painter and engraver Francesco Brizio includes trombone among numerous angel-musicians in his study, Lunette with Musical Angels in the Clouds (see detail and full image, below; click picture for larger version; public domain) (Bohn 532).

Late 16th Century—Munich, Germany: Friedrich Sustris (or his school), shows multiple trombones in Study of Musical Angels (Museum of Grenoble). See below image; public domain.
16(th)-17(th) century—Southern Germany: An inlaid panel with various fruit woods by an unknown artist depicts a richly-dressed woman playing trombone (see below image; public domain) (Cambi Auction House; cambiaste.com; accessed 10.10.23).

