尺寸：重约：3.29g（寄售）

开元通宝为唐代货币。钱币在唐代始有“通宝”。唐初沿用隋五铢，轻小淆杂。唐高祖武德四年，为整治混乱的币制，废隋钱，效仿西汉五铢的严格规范，开铸“开元通宝”，取代社会上遗存的五铢。

Size: Heavy approximation: 3.29g
Kaiyuan Tongbao was the currency of Tang Dynasty. Coins began to have "Tongbao" in the Tang Dynasty. In the early Tang Dynasty, the Sui baht was still used, which was light and confusing. Tang Gaozu Wude four years, in order to rectify the chaotic currency system, waste Sui money, follow the strict norms of the Western Han Dynasty baht, create "Kaiyuan Tongbao", replace the remaining baht in society.