UV activity on North Korea 5000 Won note (2006)? [solved]

Hi All

I recently got a North Korea 5000 Won note (2006) and when I shine a UV light on it, there are two small dots which look more like contamination than security features. It isn't dust, the dots cannot be moved.

So my question is: for those of you who have this note, do you see any UV activity on it?

This has happened on quite a few of my North Korean notes as well, it seems to be a reoccurring issue with their printing process over the years.

Either spattered UV ink or contamination of the substrate from the processing to someone with moist pronunciation (spit).