I´ve got some VDO oil pressure gauges (1x NOS) for sale on thesamba.com:
http://www.thesamba.com/vw/classifieds/detail.php?id=1714738" onclick="window.open(this.href);return false;
http://www.thesamba.com/vw/classifieds/detail.php?id=1522464" onclick="window.open(this.href);return false;
Send me a PM or mail, if you are interested.
Cheers
Olaf