On such high-quality painted cups, in the position along the rim, we would expect either a dedication or an ownership/sympotic inscription. -ρη could be part of the word [Ι]ΡΗ of a dedicatory graffito, where the name of a deity appears as the first word, perhaps followed by divine epiclesis and completed with hiere with the name of the cup either spelled out or dropped, e.g. [deity + epiclesis in the Dative (kylix) [Ι]ΡΗ, that is, "consecrated to [deity's name]." The reason we have just two letters to the right of the image of two men facing each other is probably because the author of this graffito did not want to interfere with the image, so broke up the text when it reached the image on the left and then continued to the right. This would make sense if the beginning of the text was in the clear space along the rim, but as it went round the pot, it ran into the painted sector and had to break up the text. The vase seems to me to be close to Agora XXIII, no. 1475 (possibly by Lydos, 560-550 BCE. It also has a plain black glossed rim and a thin red line below it. The head of the man is similar as well.