Hi Paul; If you are from Nowra, I would suggest try Bruce from Alstain in Ulladulla 44555963. I get him to do all my tanks, bottles etc. he's good at copying a  dummy shape made from cardboard or foam or real estate signs etc. He does first class work & I think very reasonably priced. Say Wayne Horsfall said to call. 

I couldn't remember your name but I figured it was you. Drop into the workshop when you are in Ulladulla if you have time, the ern is always on.

Got to hide it somewhere, its less conspicuous walking around the workshop with a coffee mug than a glass.