Seiko 5626

The Seiko 5626 was a high end automatic movement with 25 jewels, beating at 28,800 bph. It displays the day and the date, both having a quickset.
It was introduced in 1968 and was produced until ca 1975.
We can find it in the Seiko KS (including the Vanac) and in the Seiko LM De Luxe ranges.