-- Who is depicted?

 Nike and her siblings were close companions of Zeus, the dominant deity of the Greek pantheon. According to classical (later) myth, Styx brought them to Zeus when the god was assembling allies for the Titanomachy against the older deities. Nike assumed the role of the divine charioteer, a role in which she often is portrayed in Classical Greek art. Nike flew around battlefields rewarding the victors with glory and fame, symbolized by a wreath of Laurel leaves (Bay leaves).
Statuette of goddess Nike found in Vani, Georgia.

Nike is seen with wings in most statues and paintings, with one of the most famous being the Winged Victory of Samothrace. Most other winged deities in the Greek pantheon had shed their wings by Classical times. Nike is the goddess of strength, speed, and victory. Nike was a very close acquaintance of Athena, and is thought to have stood in Athena's outstretched hand in the statue of Athena located in the Parthenon. Nike is also one of the most commonly portrayed figures on Greek coins.

Names stemming from Nike include among others: Nikolaos, Nicholas, Nicola, Nick, Nicolai, Niccolò, Nikolai, Nicolae, Nils, Klaas, Nicole, Ike, Niki, Nikita, Nikitas, Nika, Nieke, Naike, Niketas, Nikki, Nico, and Veronica.

-- Technical/Specification about the statue

  A stele  is a stone or wooden slab, generally taller than it is wide, erected in ancient Western culture as a monument, very often for funerary or commemorative purposes ("grave steles"). Stelae as slabs of stone may also be used for ancient Greek and Latin government notices or as territorial markers to mark borders or delineate land ownership. The surface of the stele may very often have text and/ or have ornamentation. This ornamentation may be inscribed, carved in relief, or painted onto the slab. Traditional Western gravestones may technically be considered the modern equivalent of ancient stelae, though the term is very rarely applied in this way. Equally, stelae-like forms in non-Western cultures may be called by other terms, and the words "stele" and "stelae" are most consistently applied in archaeological contexts to objects from Europe, the ancient Near East and Egypt, China, and sometimes Pre-Columbian America.