Found stamped in black on the face of the extraction handle
Found printed on solder side parallel to the right edge
overall: 1/2 in x 2 1/2 in x 5 1/2 in
This W102 module has a green board which is covered in components. There is a beige plastic extraction handle, which is held in place by two metal rivets. Between those rivets there are three round inspection stamps printed over the words "FLIP CHIP".