More duty free

I went for a wander trying to find a different image for the weekly blip challenge theme of DUTY. I was hoping to find a policeman or soldier on duty somewhere near the castle but couldn't find one. Walking back down the Royal Mile I glanced into the window of the Scotch Whisky Experience and spotted these bottles. They are used in whisky industry to take out samples from casks and would usually have a label on them to show that duty hadn't been paid on the contents.