Good evening to everybody. Some time ago I bought this night bottle in yellow glass decorated with engravings to white. I do not particularly like it even taking into account that has a nasty crack on the base. What intrigued me is the whole bottle . In fact, removing the glass , it appears at the mouth of the bottle another small bottle which serves as a cap and which is also fitted with a frosted glass stopper. Both the bottle necks are garnished silver 800. Would someone be so kind and tell me the use of this bottle as I’ve never seen another like this. Thank you for your attention.