| Artist | anonymous |
| Object | painting |
| Technique | oil on primed canvas |
| Dimension | 92 × 132 cm |
| Title | marine painting |
| Date | end of 17th century |
Before treatment: The surface is dirty and the varnish darkened. There are numerous losses, fillings and retouchings.
During treatment: The painting is half-cleaned and the varnish reduced. The dark spots are old darkened retouchings.
Before treatment.
During treatment.
After treatment.