Free Lisbon Metro Card has 15 Euro balance on it

I went to Lisbon last November during the week of Thanksgiving, I bought a metro card (you can go to Sintra using it) for 20 Euro, but I used it once and walked everywhere in Lisbon, so there is at least 15 Euro left on the card. I won't go back to Lisbon this year, and the Metro card is only good for 12 months (November 2018). If you are traveling to Lisbon anytime before the end of November, email me your mailing address. I will happy to send you the card, so you can use it during your trip in Lisbon. Free, I hate to waste 15 Euro remaining balance when somebody else can use it. Dan