This is a beautiful 70's vintage Zenith AutoSport Luxe 28800 gold with a prestigious 23 jewels Zenith 2562PC caliber. 28800 A/Hr being for the movement balance wheel frequency (480 A/min, 8 A/sec).
The specifications of the Zenith Cal. 2562PC; here.
If you want to read more about the history of Zenith; here.
Elegant blue dial Zenith AutoSport automatic from the 70's as previously with the 23 jewels Zenith 2562PC caliber.