It can be difficult to give advice about artifact care without seeing the artifact. Please email an image of the object with something to give a sense of scale (ruler, coin, pencil) and a description of the preservation concern to katherine.ridgway@dhr.virginia.gov. Staff reply to inquiries within a working week to the best of their abilities. Another way to find a conservation practitioner to care for your object is to contact the American Insitute for Conservation at 202-452-9545 or use their Find a Conservator tool here: https://www.culturalheritage.org/about-conservation/find-a-conservator