In April I posted my Certificate of Translation Competence, Grade II. I went back for the Grade I test last month and just got notification online that I passed. Until I receive the official certificate by mail, this screenshot from the Korean Society of Translators will have to suffice as evidence (my name is the one shown with the red box near the top). Only two people passed at the top level of Grade I this time around, and I'm not aware of any other non-heritage translators who have passed at this level before.
* September 19, 2011 - I just picked up my certificate. It can be viewed here.