消印

1. Origins, structure, and basic meaning

• Structure: In 消印 (けしいん), cancellation 消 and mark 印 combine to denote a postal cancellation.
• Basic usage: 消印 is the postal mark showing that a stamp has been used.

2. Common pitfalls and similar expressions

• Postmark as evidence
  • 消印から can present its date or place as evidence for an inference; it is not a general stamp for erasing text.