This bottle (which I was getting cleaning tips for!) has obviously been underground at some point! The colour is a strange green colour but I cant get it exactly due to all the muck! The rim has been rounded off at the top, and the neck is really narrow - 1cm at top but narrows. It also looks as though the bottle bit and the base have been moulded seperately and joined together.
Can anyone hazzard a guess as to the age of it, and possible use?