# Trompe l'Oeil. A Cabinet of Curiosities with an Ivory Tankard

- By: Cornelius Norbertus Gijsbrechts (Flemish, 1625–1675)
- Date: 1670
- Medium: Oil on canvas
- Classification: Painting
- Dimensions: height 99.5 cm, width 89.5 cm, height 102.5 cm, width 92.7 cm
- Culture: Flemish
- Museum: [SMK – National Gallery of Denmark](https://open.smk.dk/artwork/image/KMS3076)
- Rights: [Public Domain Mark: SMK waives its rights in this photograph](https://creativecommons.org/publicdomain/mark/1.0/)
- Picture: https://iip-thumb.smk.dk/iiif/jp2/j9602418d_KMS3076_crop.tif.jp2/full/!1920,1080/0/default.jpg
- Who can see it: Teens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

This artwork is a cabinet door that can actually be opened. It was probably made to fit into a panel or wall of the Green Cabinet at Rosenborg Castle. The Green Cabinet contained Frederik III’s collection of valuable objects of art, like the ivory tankard that can be seen through the leaded window of the cabinet door. From the back only the window with inserted letters, newspaper announcements, a quill, and a penknife can be seen. The ivory tankard and other treasures that can be seen through the glass at the front are not painted on the back, because these objects were actually visible once the door was opened.