# Brief aan anoniem

- By: Willem Oppenoorth (Amsterdam, 1847–1905)
- Date: 1877-02-17
- Medium: paper, ink
- Classification: letter
- Dimensions: height 425 mm x width 425 mm
- Museum: [Rijksmuseum](https://www.rijksmuseum.nl/en/collection/object/RP-D-2017-1407--e2f5b4b21853c55f5cea48b0fb8561a7)
- Rights: [Public Domain Mark](http://creativecommons.org/publicdomain/mark/1.0/)
- Picture: https://iiif.micr.io/guDdL/full/!1643,1080/0/default.jpg
- Who can see it: Tweens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)