Minnefer was Supervisor of Palace Attendants and Overseer of Messengers in the Fifth dynasty of Egypt. His statue features him standing left foot forward, with his back to a wall and with clenched fists.
References
See "The Old Kingdom and First Intermediate Period," 408 KB pdf-file, Cleveland Museum of Art, pp. 50–51. Note that footnote 2 on page 51 references Henry G. Fischer, "An Elusive Shape within the Fisted Hands of Egyptian Statues" in Ancient Egypt, pp. 143–155, for which no date is provided but most probably refers to ISBN 0-87099-222-8 and ISBN 0-87099-159-0.