So far as can be discerned through burning, this is standard LRA2 Southern Argolid fabric and surface treatment: various inclusions with large, subrounded lime chunks and (lime?)stone, many burned.
Preservation comment
One small sherd preserves 15% of rim down towards joint with upper neck. Slight to moderate, somewhat extensive abrasion; worn breaks. Intense secondary burning: scorched surface; fabric greenish and flakey to powdery in places.
“KTH2517 (Late Roman Amphora 2).” In Kenchreai Archaeological Archive, edited by J.L. Rife and S. Heath. The American Excavations at Kenchreai, 2013-2024. <http://kenchreai.org/kth/kth2517>