This is a cash envelope, essential for sending cash by mail. Designs vary depending on the era. There is no expiration date. ◎Type 1: Currently, you only need to write the recipient's address and name, and the sender's address and name on the front. The sticky note on the back is not used. It comes with a paper seal (non-carbon type). ◎Type 2: Carbon type. You can write the recipient's address and name, and the sender's address and name directly on the envelope. ◎Type 3: Write the recipient's address and name, and the sender's address and name on the front of the envelope. (Non-carbon type) Thank you for finding this page among the many items for sale. I would be very happy if you could also read my profile. I apologize for the poor quality photos. Please feel free to ask any questions you may have. I am selling items as a hobby and am not a secondhand dealer. I do not sell items that have passed through other people's hands or have been collected as waste. I have no opportunity to use them even if I keep them, so I would like to pass them on to someone who will cherish them or needs them. Item...Ledger/Receipt/Office Documents