落款用英语怎么说？

落款

例句

• I've written far too much and had better sign off. 我这封信写得太长了,最好就此落款结束.
• Then I saw the dateline -- 1924. The letter had been written almost sixty years earlier. 信的落款日期是1924年, 差不多写于60年前.
• Scholars ascribe the unsigned painting to Rubens. 学者们认为这幅无落款的画的作者是鲁本斯.