Statue of Trojan priest Laocoon and sea serpents. Laocoön was a Trojan priest of Poseidon (or Neptune), whose rules he defied. He was subsequently subject to divine execution by two serpents sent to Troy across the sea from the island of Tenedos, where the Greeks had camped. Laocoön warned his fellow Trojans against the wooden horse presented to the city by the Greeks and is the source of the saying "Beware of Greeks bearing gifts".
This is a fine art print of a beautiful engraving of a statue at Versaille Palace in France made in 1689 by Simon Thomassin. It's from his work "Recuel des Statue, Groupes, Fontaines, Termes, Vases et Autres Mangifique Ornamens du Chateau et Parc de Versailles", which shows the magnificent statues, fountains and ornaments at the Palace of Versaille.