Start of the first quartz watch in 1972, caliber 1555, 7 jewels based at an ESA 9180
Case no: 755.2054.41
Signed crown, the glass is signed with the famous 5 dots inside.
Eterna did make different models with this caliber using different dials.
This one does have a beautiful mint reflection checkered dial.
Eterna did make several different colors of the dial all checkered all great!