I found some unused 7-yen official postcards. I think they are from the mid-Showa period. They are unused, but have yellowed due to age. The bottom left corner is bent, though not creased. As someone born in the Showa era, I feel a sense of Showa romance. It was a time when there were no mobile phones, and it was natural to write thank-you notes. To those who finish their thank-yous by sending stamps on their mobile phones, Please pick these up and feel the romance.