A very interesting and rare Longines Ultronic chronograph from the 1970s using the ultimate and most complex tuning fork movement: the ESA 9210 Mosaba. This movement has been also used in the famous Omega Speedsonic among others.
Very good unrestored condition
Brushed stainless steel case
Polished bezel
Black dial with silver indexes
Black and white hands
Day and date
Crystal with a scratch aligned with the 4 index (which makes it actually not very visible)
Signed crown
Signed back
Original signed steel bracelet (fits up to about 17cm)
The case measures 36mm without crown, 40mm lug to lug, 14mm thick with a 23mm lug width.
It is powered by tuning fork caliber Longines 749.2 / ESA 9210. It has been fully serviced by a specialist in Switzerland in July 2026. It is fully working, keeps time and the chronograph work correctly.
