Vintage Seiko Session Tank 5E31-5A20 1989 Watch
Amazing Vintage Seiko Session 5E31-5A20 Quartz Tank Watch from 1989 on it's original bracelet
It's a really nice rectangular 30mm steel case with HardTitaniumNitride coating with matching original bracelet which fits up to 17-18cm wrists. The white dial is very clean - and the very visible unique HTiN coating color makes this quite the unique Seiko!
The quality is mainly in the caliber, because at this time Seiko was able to produce high-quality quartz watches. Around 1988 they started to measure the accuracy in seconds per year, instead of per month - this partly mechanical caliber has 3 jewels and a ±20 seconds/year accuracy.
Watch has been cleaned and received a fresh battery to ensure it working perfectly.
This is model SATW003 with a price tag of ¥35,000 in 1990.
Description
Amazing Vintage Seiko Session 5E31-5A20 Quartz Tank Watch from 1989 on it's original bracelet
It's a really nice rectangular 30mm steel case with HardTitaniumNitride coating with matching original bracelet which fits up to 17-18cm wrists. The white dial is very clean - and the very visible unique HTiN coating color makes this quite the unique Seiko!
The quality is mainly in the caliber, because at this time Seiko was able to produce high-quality quartz watches. Around 1988 they started to measure the accuracy in seconds per year, instead of per month - this partly mechanical caliber has 3 jewels and a ±20 seconds/year accuracy.
Watch has been cleaned and received a fresh battery to ensure it working perfectly.
This is model SATW003 with a price tag of ¥35,000 in 1990.
