ALL ORIGINAL - CRYSTAL/HANDS/CASE/MOVEMENT - MOVEMENT CLEAN AND FREE OF WATER DAMAGE/RUST/ETC. 

OPEN FACE - SCREW ON BACK PLATE - MONOGRAMMED LOOKS LIKE J.M.

INSET SECOND HAND

MOVEMENT APPROX. 4 CM. WIDE 

POSSIBLY FROM THE 1920'S

CASE - KEYSTONE WATCH CO.