Those strange denominations are silly to me. Maybe a sign of silver hitting a peak frenzy of popularity from 2011 to 2013. Reminds me how there are a bunch of weird art bars minted around 1979 and 1980... a previous silver frenzy.
By the way, at least Zinc isn't as worthless as Iron. Zinc is rarer, and has additional properties, like helping the body destroy viruses :)
Ha ha...you're right. 30 mg daily, with some quercitin.