http://www.ebay.com/itm/130890860162?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649Purchases made through these links may earn this site a commission from the eBay Partner Network That corrosion looks like it is about to eat its way through the other side...
Yeah gold has corrosion like pitting. It is only 18k so the rest of the mixture can be exposed to corrosion