When was "[Unknown Sitters]" created?

This artwork was created before 1865.

What medium is "[Unknown Sitters]"?

[Unknown Sitters] is Albumen silver prints from glass negatives with applied color.

Yes, [Unknown Sitters] is in the public domain and available for free download under CC0 license.

[Unknown Sitters] was created by Countess Virginia Oldoini Verasis di Castiglione|Pierre-Louis Pierson|Marck in before 1865.

before 1865

Medium

Albumen silver prints from glass negatives with applied color

Dimensions

Image: 3 3/8 in. × 2 in. (8.6 × 5.1 cm) (each)

Classification

Photographs

Department

Photographs

Museum

Metropolitan Museum of Art, New York, NY

Credit

Gilman Collection, Gift of The Howard Gilman Foundation, 2005

Accession Number

2005.100.410 (7e–h)