The quality of the decoration is reminiscent of better preserved vessels from the Crimea, and the curvature of the sherd may indicate a kind of skyphos with barbotine that was popular in the northern Black Sea during the mid- to late 1st century but rare outside that region (Hayes 10A). See: Knipowitsch  1968, pp. 22-23, pl. I (Typus 15; Olbia); Atlante II, pp. 94-95, pl. XXIII:10; Zhuravlev 2002, pp. 252, 255, fig. 9:6 (Panticipaeum), 2010, p. 68.
“KTH2272 (Pontic Sigillata Cup/Small Bowl with Barbotine Decoration).” In Kenchreai Archaeological Archive, edited by J.L. Rife and S. Heath. The American Excavations at Kenchreai, 2013-2021. <http://kenchreai.org/kth/kth2272>