1992 $5 Note Prefix In Green Ink

I've moved it back to the Australian subforum for you.

And green serial numbers on polymer notes are, almost always, the result of chemical reactions after getting laundered in enzyme-based detergents, and not a printing error or specially-printed-with-green-ink note. Dealers here in Australia get asked about them all the time.

Your notes don't look laundered, and aren't random circulation finds if they're still consecutive numbers. So I'm happy to hear an alternative explanation from the locals. Perhaps they've been left exposed to the sun for several years?

You're welcome, Sabrocks69 hope you found some more info from the search facility here.

I think there was an article in the Australasian Coin and Banknote Magazine about the different shades of green of one pound notes though I can't remember what the explanation was.