Variations in color and variety, choose by color in the listing.
Tenpōtsūhō was idea of Kinza to compete with Ginza's Kan'eitsūhō 4 Mon. The first lot was casted in 15 months period between 1835 and 1836, with a total of 29 710 700 pieces casted. The production was restarted again in mid-1837 and until 1842, additional 10 024 500 pieces casted. The Edo government gained 180 800 Ryō of profit for these cast.
The production was then restarted again in 1847 and in 1865, a new Zeniza was established in Nanba, Osaka, which casted the coin until 1868. After Meiji Restoration, the currency official of the new government restarted the cast, between 1868 and 1870, 63 913 752 pieces were casted. The total mintage since the first cast is 484 804 054 pieces.
Issuer Japan
Emperor Ninkō (1817-1846)
Type Standard circulation coin
Years 1835-1870
Value 100 Mon
Currency Mon (683-1953)
Composition Bronze (Cu 78%, Pb 12%, Sn 10%)
Weight 20.7 g
Size 49 mm
Thickness 2.6 mm
Shape Oval (With a square hole)
Technique Cast