The eyes of the cat are glass. The eyes are held in place by a pair
of metal goggles attached with a screw thru a hole in the goggle center.
Seen in Picture 1
Note 2 :
There is a round cast-iron protrusion jutting out in the center,
below the eyes. neck level. -- the protrusion has a brown peg
sticking in it. Seen in Picture 1
The function of this specially-made feature is not known.