What technique was used to render the face in this Funerary Mask from Grave Circle A, Mycenae, Greece

"the idea of humanism is mostly adeptly reflected in renaissance art by a focus on the body itself, especially with sculpture, where many detailed portraits of the human body (such as the david) were created."

1?   maybee   dnt reayoly underlsand it bim ginog o teguus#s i1