When I was a child, my mother told me a legend she had read about St. Valentine and the origin of Valentine cards: not having much money himself, the saint had written letters to various people. His ink turned to gold on the page. It remained gold for every recipient who saved and cherished the letter, but for anyone who tried scraping the gold off, it turned back into dried ink.
I have since been unable to locate this Saint Valentine legend anywhere else, nor has it as yet turned up in such of Mom's old scrapbooks as remain in our keeping. Can anyone out there in cyberland help me? (Use email, please.)