Yesterday I added a pair of details to the caption below from the Trombone History Timeline (17th century, 1st half). I will also soon be adding them to the HubPages article, How to Hold a Sackbut: The Grip of the Early Trombone in Pictures. Here are the details, along with the full image and caption originally included.
c. 1635—Copenhagen, Denmark: A ceiling painting in the Rosenborg Castle depicts musicians of the court of Christian IV of Denmark (1577-1648), including 3 trombonsits (see 2 details and full image below; public domain) (Hindley plate 17).


















