Quarter Plate Ambrotype Portrait of a New York State

Quarter plate ambrotype featuring a New York State Militia sergeant wearing a well-trimmed swallowtail coatee with bullion epaulettes and sash, holding an NCO sword, and sitting beside a European-inspired bearskin cap. Housed in a geometric union case [Berg 3-22].
Condition Report: Image with loss/crackling to emulsion and light spotting. Mat and preserver with heavy spotting/discoloration. Case with light nicks/chips to edges, corners, and raised surfaces.