This has been hanging in my local Aussie-themed pub for years, but just got around to snapping it. Looks original, but hard to tell.
https://www.awm.gov.au/collection/ARTV09061/ a few reproductions for sale on ebay etc http://www.ebay.com/itm/AUSTRALIA-RINGED-WITH-MENACE-WW2-war-propaganda-poster-24X36-RARE-VINTAGE-/400513844576 larger image here