Gift Certifikates are valid 6 months from the date of issue. Gift Certificates must be redeemed toward the purchase of eligible products at the Oberwalder shop locations Kärntnerstrasse 39, 1010 Wien and Mariahilferstrasse 61, 1060 Wien or at our affiliated shop, C. Mehsmer, Mariahilferstrasse 88a, 1070 Wien. Redemption of Gift Certificates on our webshop can be made with e-mail request:: shop@oberwalder.com