I have two Vietnam 10k Dong notes that I am trying to identify. I bought them as P119 but the Standard Catalog has these polymer notes as having (at least) variants P119a - P119k. It appears that they are somehow dated from 2006 to 2018 but I cannot for the life of me see any indication of that on either of the notes that I have. I could certainly be missing something.
Can anyone help? Below is an ebay stock photo of the note.