Hi John, thanks for the tip of using Turmeric in Rustins Metal Lacquer it should give it a nice antiqued look.
Neil I have found that there are many sources for Acetone, it is even available online from Amazon, just to digress it's quite frightening what chemicals are available by mail order particularly from EBay, such substances as 98% Sulphuric Acid, I haven't found Hydroflouric Acid yet but it is probably available somewhere on line and that would be really scary in the light of the current fashion of criminal activity in our major cities.
Dave