Triple Date Moonphase Quartz, ca. 1990
Opening the Back
This back did not have the little gap around the case back as found on the stainless watches - please see the note about opening there, as I found it quite typical to open CERTINA case backs. The groove was located at the lug side at 12 o'clock. Please note the scotch tape to protect the case when opening the watch with the Bergeon case opener.