Michael Sweerts (1618-1664), etchings, 1656
Thirteen lifelike faces from 1656 look back, or away from us. The figures differ in gender, age,  clothing style, and facial expression. In Brussels, Michael Sweerts gave drawing lessons to artists in training. This series may have been part of his teaching  material; students would use  them to draw from models. While not portraits, the types were certainly meant to be   recognizable, for instance as random passers-by in a typical 1656 street scene.