This video says about itself:
See Statues and Mysterious Disk Found in Ancient Greek Shipwreck | National Geographic
18 October 2017
Archaeologists have discovered additional intriguing artifacts from the Greek shipwreck famous for carrying an “ancient computer.” Discovered over a century ago off the island Antikythera, the ship, large for its time some 2,000 years ago, was carrying luxury goods, probably to Rome.
The site represents what one of the team’s co-leaders reports is the largest known cache of shipwreck cargo in the Mediterranean. In addition to the so-called Antikythera mechanism, a device for tracking celestial movements, the ship carried pottery items and bronze statues.
This year’s expedition has brought one more fragment of the latter to light, a disembodied arm, much like the “orphan limbs” that sponge divers first spotted when they discovered the wreck in 1900. Another bronze artifact just discovered is a disc decorated with the figure of a bull. The function of this piece is a mystery.