-- Who is depicted?
An angel, especially according to Abrahamic religions and Zoroastrianism, is a spiritual being superior to humans in power and intelligence. Angels are typically described as benevolent, dreadful, and endowed with wisdom and knowledge of earthly events, but not infallible; for they strive with each other, and God has to make peace between them. Most of them serve either as intermediaries between Heaven and Earth, or as guardian spirits. They are studied in the theological doctrine of angelology. In Christian Science, the word "angel" is used to refer to an inspiration from God. The use of the term has extended to refer to artistic depictions of the spirits, and it is also used figuratively to refer to messengers and harbingers, and to people who possess high qualities of goodness, purity, selflessness, intelligence, and/or beauty.
Angels are referred to in connection with their spiritual missions; as for instance, the "angel which has redeemed", "an interpreter", "the angel that destroyed", "the messenger of the covenant", "angel of his presence", and "a band of angels of evil".
In fine art, angels are usually depicted as having the shape of human beings of extraordinary beauty; they are often identified using the symbols of bird wings, halos, and light.
-- Technical/Specification about the statue
A bust is a sculpted or cast representation of the upper part of the human figure, depicting a person's head and neck, and a variable portion of the chest and shoulders. The piece is normally supported by a plinth. These forms recreate the likeness of an individual. These may be of any medium used for sculpture, such as marble, bronze, terracotta or wood. A parallel term, aust, is a representation of the upper part of an animal or mythical creature.
Sculptural portrait heads from classical antiquity are sometimes displayed as busts. However, these are often fragments from full-body statues, or were created to be inserted into an existing body.
-- More about the artist
Joseph Master is a French sculptor, but he wasn't really famous during his life, we do not own more information about him