With this info to consider, I would have to agree it's Aussie. Never seen a bottom like that, ever.
As for multiple pics, not by using forum software. You have to save the pics to Photobucket, and then copy the IMG code to paste here using the {IMG} tags.
THere ia actually at least one well known American medicine with that type of base mold ... VAUGHN'S VEGETABLE LITHONTRIPTIC MIXTURE.
Even so , I think the odds are it is Austrailian.
Here is an ad from 1879 I dug up, maybe a lead, maybe nothing...
GuntherHess, I don't know how you managed to come up with that, but West Maitland is only about 200 km from where this bottle was found, not really that far, even for back then with the train system that we had. I certainly think you are onto something!
I have used that online website to great effect MANY times in the past, and have searched for Dr Gordons in many different ways to no avail on there, that is why I was so surprised to see your success. I admit to not having searched for a good year or so, when there have been a large number of records added since then, which just proves that you need to keep using these sites over time. Thanks again, I am almost certain this bottle is from the Dr Gordon mentioned in the advert.
searching old ads is more of an art than a science. I doubt any two people searching for the same info would come up with the same results.
Some search engines are horrible, that one isnt too bad.