I have a bunch of old Australian $2 notes, i was examining them and noticed a small white circle below the right side serial number on one of the Fraser notes. None of my other notes or the notes i found online had this mark and i couldn't find any information about it online. Does anybody know what this is?
Sorry for the poor image quality, my camera isnt the best. The circle looks to have a consistent radius and thickness, the background line that runs into it is not present on the inside of the circle. The circle is either the same color as the background line or slightly whiter. For context this is what the pictured region looks like in every other note i have seen.
