Pretty sure it's not a found item.
look at the collar bones, no actual bottle would have those raised, much less have arms attached. That stuff would be molded in.
zbrush is this crazy awesome modeling software which is basically made for character design. those bones and things would be so hard for me to make in autocad, but its much easier to do it in zbrush. it's more like virtual/digital clay that you can sculpt. you set up a bone structure and morph spheres around with certain tools and you can get some great looking organic shapes with much less effort than a hard edged modeling system
It's not entirely accurate, the breast bone is a little different and the labels would need to be changed out, but might be an easy place to start from.
I would love to have someone sneek up behind those displays and take a few good pictures of the backsides of those bottles in the wizard world of harry potter.
When I was at WWOHP in October I bought the Skele-gro keychain, its small but pretty accurate as far a a keychain goes I suppose. I took some quick pics on my phone so soz for the quality, it might make for a good starting point if no pics of the back of the actual ones can be found
Hope these are of help to someone, I hope to start on this replica pretty soon myself and look forward to seeing others progress too