Please help with identification. It's a swirly "D" on this old 4 1/2 pint pitcher. Thank you. http://sv1.letmehost.com/img.php?file=sv1/21/pitcher1.jpg" onclick="window.open(this.href);return false; http://sv1.letmehost.com/img.php?file=sv1/21/pitcher2.jpg" onclick="window.open(this.href);return fal...