Beneath the Varnish: Justus Sustermans’ Portrait of Cosimo III de’ Medici as a Child

1.0The Phoebus Foundationhttps://phoebusfoundation.org/en/Beneath the Varnish: Justus Sustermans’ Portrait of Cosimo III de’ Medici as a Child - The Phoebus Foundationrich600338<blockquote class="wp-embedded-content" data-secret="slGt1r1yVh"><a href="https://phoebusfoundation.org/en/beleef/justussustermans/">Beneath the Varnish: Justus Sustermans’ Portrait of Cosimo III de’ Medici as a Child</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://phoebusfoundation.org/en/beleef/justussustermans/embed/#?secret=slGt1r1yVh" width="600" height="338" title="“Beneath the Varnish: Justus Sustermans’ Portrait of Cosimo III de’ Medici as a Child” — The Phoebus Foundation" data-secret="slGt1r1yVh" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://phoebusfoundation.org/wp-includes/js/wp-embed.min.js </script> https://phoebusfoundation.org/wp-content/uploads/2025/10/DSC_1343_RESCALED-scaled.jpg17092560Brazilian conservator Aline Assumpção is working at The Phoebus Foundation on the restoration of the Portrait of Cosimo III de' Medici as a Child (1649) by Justus Sustermans. The treatment involves the careful removal of yellowed varnish layers and the correction of structural deformations, revealing once more the painting's original colours and refined detail.