Micron pen used by architect Michael Marshall

Micron pen used by architect Michael Marshall. The pen has a tan body (.2a) and cap (.2b). There is a silver tip with an attached clip on the cap. The top of the cap has printed text for [005]. The body has a black indented base. There is black and purple text on the body of the marker identifying the pigma micron pen for archival use. The pen has a small fine tip.