My father had one of these that he used in the war, crocodile skin with a silver casing pushing up quite high on it, but leaving a strip of glass open as in your second photo so that you could see what was in it (also rising than that, but you could pull it completely off)-it curved round so that it would be comfortable when slipped into a hip pocket. It was really natty, a shame that it seems to have been snaffled by one of my brothers.
I think most of the US has laws restricting having any unsealed containers in the car (including flasks)... there are like two states where the passenger can have unsealed booze, though - I think it's MD and VA. It's a bit ridiculous, because technically you could leave a party where you brought a large bottle of wine or spirits that was opened but not used and there's no way to bring it home. Hopefully the UK isn't nearly as restrictive.