Reference
Note:
Hartill included a small light version of Đại Định Thông Bảo among his category: ‘Small Copper – Distinct Calligraphy, Group 1. (“An Phap” type)’. Hartill has reviewed the various hypotheses for the chronology of An Phap-type coins advanced by Thierry and others. He proposes (GCC, p. 143) that they were manufactured in North Vietnam under the Mac between 1540 and 1590. Notwithstanding this, HCR 58847 appears to have rather crude thick shallow characters and if made of brass, as it appears to be, it may be of later manufacture.
Reference
Thierry CMVS : Pages 14-16, cf Figures 8-9; Page 47, cf Figure 109.
Note:
Thierry (CMVS) again illustrated (Fig. 8) the coin he had previously figured in his CMV along with a second slightly larger specimen (brass, 22.7 mm, 1.76g), (Figs, 9 and 109), both having a flat reverse and both of them being regarded as unattributed late unofficial coins, Vietnamese imitations of Da Ding tong bao. However Thierry also described one other distinct type of small coin with the Đại Định Thông Bảo legend reading TBRL. For this, he cited an illustration (No. 7) from Miura Gosen’s Annam Senpu, Volume II, which he described as depicting a coin with a wide outer rim and small characters, ’typical of the 18th century’. It is possible that HCR 58847 is an example of this unseen variety, dating from between 1700 and 1800, rather than of the commoner variety which Hartill dated to 1540-1590. Accordingly a provisional date range of 1590 – 1800 has been assigned to this coin.