Rotation Postmark

Rotation Postmark is a professional term in international trade document processing. It refers to a postmark with a rotation number or date stamp affixed by a bank or postal system on the cover of a mail item or the back of a document (such as a bill of lading, invoice, or packing list) to prove the date of dispatch of documents in letter of credit or collection transactions. Its core function is to prove that documents were dispatched within the prescribed time limit, satisfying the letter of credit's requirements for the presentation period or proof of dispatch. It is commonly used in letter of credit clauses requiring submission of a 'mailing receipt' or 'proof of dispatch,' especially when original documents are sent in two batches, as the rotation postmark can distinguish different batches. Precautions: Companies must ensure the postmark date is clear and legible and consistent with the dispatch deadline specified in the letter of credit; if courier services are used, the courier tracking number and official website tracking record usually replace the postmark. The difference from an ordinary postmark is that a rotation postmark emphasizes the identification of 'batch' or 'rotation' and is often used in document circulation between banks or between banks and customers. Unlike the 'presentation period,' the rotation postmark focuses on proof of the time of dispatch, not the time documents arrive at the bank. Foreign trade practitioners should confirm with the bank in advance whether a rotation postmark is accepted as a compliant document to avoid refusal of payment due to discrepancies.