What's neat is that I know when this countermark occured, so your job is to guess when the countermark was struck on the coins!!! I know when they were strucked as that is when I took the pictures, and videos AND even stamped them myself! Err, I am not the one in the picture there...
Link here as follows:
Link
Best guess around the time when the striking in my time took place will win this coin! (postage / handling free)
Two guesses per person.
Don't forget to include the standard AM and PM to avoid silly confusion.
Contest will end at Monday, Syd time 12 midnight. So it could be Monday afternoon for the folks at the US.
Let the guess roll!