Despite his early death, Altamouras left a number of paintings, mostly small-scale. In particular, his seascape paintings that he almost exclusively produced are considered equal to the works of another Greek painter of seascapes, Konstantinos Volanakis. In 1878, the year of his death, two of his works ("Destruction of the Ottoman flagship by Papanikolis in Eressos" and the "Naval battle of Captain Miaoulis") were presented at the International Exhibition of Paris. The latter was also presented at the Exhibition of the Sacred Battle of 1821 at the Athens Polytechnic in 1884. Another of his seascape paintings was presented at the International Exhibition of Rome in 1911.