I just added the below image and caption to the Trombone History Timeline (17th century, 2nd half) and to the post Trombone Iconography: Young Trombonists in Five Montserrat Paintings.

c. 1675—Montserrat, Spain: Virgen Montserrat, an oil painting by Agustí Renom, an artist living in Montserrat, includes a figure in the foreground playing trombone. The image bears a resemblance to several other Montserrat paintings that include trombone (see below image; public domain) (Esteve, Instrumentos Musicales en las Representaciones de la Virgen de Montserrat).