Silver Hammered Coinage, Nguyen Dynasty (1802-1945), Emperor Tu Duc, Nguyen Phuc Hong (1829-83), 1/2 Tien, 1848. 1.5g, 0.8000 Silver, 20mm (Note: 1/2 Tien = 5 Phan Zinc or Brass cash coins). Obv.: 'Tu Duc Thong Bao'. Rev.: Blank. This type was used as a presentation piece and was not meant for general circulation. Usually holed on 12 o'clock and 6 o'clock. This type is seriously undervalued in Krause. Good Extremely Fine. Very Scarce. Ex Jules Silvestre collection.