I just added the below painting to the Trombone History Timeline and to the post Pick That Thing Up and Play! 14 Trombone Paintings from 17th Century Flanders.

c. 1610—Apollon défié par Marsyas, a painting attributed to Frans Francken (1581-1642), includes a trombone resting on the ground (see below image; public domain) (National Library of France).