The official name used in kin-za (an organization in charge of casting and appraising of gold during the Edo period) was ichibu ban, which also appeared in "Sankazue" (Picture Collection of Three Coins: History of Coinage in Japan) using different Kanji character, 一歩金.
金座などで用いられた公式の名称は一分判（いちぶばん）であり『三貨図彙』には一歩判と記載されている。