The stamp used by Goldsmiths' Hall in London attesting the quality of gold and silver articles.

伦敦黄金纯度检验局检验金银纯度的印记。

A stamp used by English assay offices, attesting the quality of gold and silver articles.

金银纯度检验证明的印记。

Any mark or proof of genuineness.

任何纯正的记号或证据；品质保证。

To stamp with a hallmark.

盖印以证明。