Four Chinese characters - Thanh nguyen thong bao / Blank. 21mm, 1.64 grams. Toda #30; Barker 25.1.
Hồ Quý Ly (13361407), also called Lê Quý Ly, was the founder and first king (1400-01) of the Hồ Dynasty of Vietnam, who rose from the post as a mandarin under Trần Dynasty. His reigning title was Thánh Nguyên.