All I can say is that they did not make that particular Warner's Safe Kidney & Liver Cure in clear, they were all amber. Clear was available for the 1/2 pints, but I didn't see one for the full pint Warner's Kidney and Liver Cures. I got that info from a Warner's site (warnersreferenceguide.blogspot.com) You can check it out if you wish. However, I'm not sure if they made them clear in Australia. Maybe a more experienced collector can can give more info.
My thoughts are that it is not a reproduction, if you do a Google search and go to images for warner safe cure there are a couple of pictures of your bottle. I feel it would be too expensive and not desirable enough to bother faking them.