Two reliefs of cyclical shape (tondi) executed by the sculptor Demetrios Kossos and another one showing a head, a work of the artist Leonidas Drosis, are exhibited at the Museum of the City of Athens, recent acquisitions of the institution. The two works of Kossos were purchased by Lambros Eutaxias, the Museum’s founder, in 1983, while the work of Drossis is a donation of Constantine Tsopotos to the Museum. These three works of scupture, although almost unknown to the public, are representative of their creators, whose artistic profile and personality have remained obscure, especially that of Kossos. Furthermore, the study of these reliefs increases even to a slight degree our inadequate knowledge of Greek sculpture during the first decades following the Greek Revolution.