1 Cash - Thiệu Phong Thông Bảo

Thiệu Phong was the reign title of Trần Dụ Tông, sixth emperor of the Trần dynasty, whose rule coincided with a period of mounting internal dysfunction — court factionalism, peasant unrest, and the early tremors of the Cham military pressure that would eventually devastate the dynasty within two generations. Cash coinage of this period followed the Chinese square-hole convention long established in Vietnamese minting, with production almost certainly centered at the imperial foundries near Thăng Long. Barker 19.1 is among the more frequently encountered Trần dynasty types, suggesting sustained output across the reign rather than a single short issue.