ETA Prototype/Ebauche Tissot Navigator

A very rare and interesting prototype / ebauche watch from ETA displaying the use of the analog/digital caliber 988.431.

The watch was cased by Tissot, in a case from the 1990s Navigator series.

This very interesting and rare watch is in good original unpolished condition.

All stainless steel

Original signed bracelet fitting wrists up to about 16cm.

Sapphire crystal signed ETA Swiss Quartz

Dual display with analog time and digital multi function: Alarm, Chronograph, 2 time zone…

All the function appear to be fully working. The display doesn’t show any defects.

The case measures 37mm without crown, 41mm lug to lug, 7mm thick with a 15mm lug width.

It is powered by a Swiss made Eta quartz caliber 988.431. It is fully working.