Jonathan Simkhai long sleeve black top size small

Jonathan Simkhai long sleeve black top size small Great preused condition with light signs of wear and a small blemish on the back which could probably be cleaned out but I haven’t tried. Barely noticeable when worn (shown in photo). Back is a little longer than the front of shirt. Materials tag half worn off, but the trim says 100% silk. I think the other materials are viscose and perhaps Taffeta.