Only the stoppers are cased, quite a lot of them have optic moulding, there is plenty of variation in quality though.
Is the film reference the Italian Job?
I used to keep the bottles 'everywhere', there was not much choice really..... I sold them all on ebay a few years ago, some went for pennies and many sold well. They were my first foray into selling on ebay, I don't have photos of all of them, these days I keep a better photographic record. Here are a few though:
John