This Jupiter type is roughly based on the colossal bronze Zeus by Myron that stood with Athena and Herakles in the Heraion on Samos. The Zeus was brought to Rome by Antony and was erected by Augustus in a small temple on the Capitoline Hill, inspiring variations and interpretations of the type, which were ubiquitous in the early Roman Period. See no. 127ff. in Tiverios, "Zeus" in LIMC.