The kanji 匁 represents a unit of weight, specifically the "monme" 匁, a traditional Japanese unit of mass. It’s primarily used to measure the weight of precious metals, such as silver and gold, and also certain other goods.

・On-yomi (音読み): men (メン) ・Kun-yomi (訓読み): monme (もんめ)

⚫︎ 金匁 Translation: monme of gold (used for measuring the weight of gold) ⚫︎ 銀匁 Translation: monme of silver (used for measuring the weight of silver) ⚫︎ 一匁 Translation: one monme