technique is commonly called Point de Gaze
<div class="fn value">
Unknown artist<span style="display: none;">Unknown artist</span></div>
mid-19th century
<a rel="nofollow" class="external text" href="https://collection.cooperhewitt.org/objects/18418071">Catalog</a> <a rel="nofollow" class="external text" href="https://images.collection.cooperhewitt.org/130148_13313d6d2c65e74c_x.jpg">Photo</a>