title page of "Andromeda und Perseus", 1783, showing two library stamps. The first stamp is touching the ornament, and the second library stamp of the Musikabteilung (and their signature within the Österreichische Nationalbibliothek) "2685221-A" right under the date of print reference: 1783. https://onb.digital/result/10480C4E
https://media.historians.social/media_attachments/files/111/856/756/172/540/330/original/3a48ca61650a23c2.png