Reference
Note:
HCR 58914 appears to be a Tường Phù Nguyên Bảo, although the coin is crudely made and worn, such that the right-hand character is illegible. A similar large bronze coin (see Zeno #232853) https://www.zeno.ru/showphoto.php?photo=232853 has been attributed to the Nguyễn 阮 Lords in Đàng Trong, as a private issue of the time of Nguyễn Phúc Chú 阮福澍 (Ninh Vương 寧王 1725-1738) or Nguyễn Phúc Khoát 阮福闊 (Võ Vương 武王 1739-1765). See also Barker, pp. 204-205. Accordingly a provisional timescale of c. 1725 – c. 1765 has been assigned to this coin.