Hammett suit dress

I am selling a Hammett vintage grey suit dress. It is unlined but the material is very heavy and thick. It is size US 6 and fits like it. The material tag is worn through so I don't know what the material is. It is in excellent condition! I got this dress about a decade ago in a consignment store in CA and never wore it. This would be a great piece to dress up or down. Very versatile!