There is no mention of any "state" flag until the mid-14th century, when a Spanish atlas, the Conosçimiento de todos los reynos depicts the flag of "the Empire of Constantinople" combining the red-on-white Cross of St George with the "tetragrammatic cross" of the ruling house of the Palaiologoi, featuring the four betas or pyrekvola ("fire-steels") on the flag quarters representing the imperial motto Βασιλεύς Βασιλέων Βασιλεύων Βασιλευόντων ("King of Kings Reigning over those who Rule"). The tetragrammatic cross flag, as it appears in quarters II and III in this design, is well documented. In the same Spanish atlas this "plain" tetragrammatic cross flag is presented as (among other places in the Empire) "the Flag of Salonika" and "the real Greece and Empire of the Greeks (la vera Grecia e el imperio de los griegos)". The (quartered) arrangement that includes the Cross of St. George is documented only in the Spanish atlas, and most probably combines the arms of Genoa (which had occupied Galata) with those of the Byzantine Empire, and was most probably flown only in Constantinople. Pseudo-Kodinos records the use of the "tetragrammatic cross" on the banner (phlamoulon) borne by imperial naval vessels, while the megas doux displayed an image of the emperor on horseback.