Originally Posted by
ORDflyer92
Even at major airports in Europe, I have never encountered a partner airline agent who knows what AA Platinum is. They just need proof of your OW Sapphire status, which should be printed on any AA partner boarding pass.
One's virtual AAdvantage card (referenced in Post #11) contains a colored oval indicating one's oneworld status -- as well as a scannable code. So either a screenshot or a paper copy (printed on a color printer) should suffice.