I understand how this could have been a problem at Perth, the U.S. mint, and others, some detergent stain during manufacturing or whatever, but the obvious question is why does it CONTINUE to be a problem ? They can put a probe around Ceres and land some crap on a comet but they can't figure out where these white spots are coming from and make it stop happening ? People making rounds seem to have figured it out, they just don't do whatever crazy stuff the "better" mints are doing. Just get a round piece of silver and stamp a freaking animal on it already.
Thanks for waking us up, but check copper, zink ............. and lot more - give us some good advice from experts whats to do. - Buy some US stocks, Ahhhhh, las vegas - thats a good idea !