Product name: Postcard A79: The Most Beautiful Music Is Made With The Sensitive String Paper Wish/Postcard Material: FSC mix 400 grams matt, size 11 x 17.5 cm. Retail price: €1.25 without envelope, €1.50 with envelope. Pure.. The natural-like look of our cards gives a rustic and warm look. The material from which they are made is PURE and environmentally friendly without a coating layer. They are provided with a card number and bar code.