by Mandrake » Apr 26th, '12, 21:26
I'm assuming that such aging would need the bottle to be encrusted with the patina of time and environment, i.e covered in dust which is mostly stuck to the glass. Perhaps a layer of some kind of adhesive - glue, wallpaper paste, PVA and them light layers of dirt, dust, sand, ashes etc flung at it. As with aging cards or other props, less is more and only the bare minimum will be needed to be convincing.