Vintage 1930's Rhinestone Perfume Ring

This vintage costume rhinestone ring came out of an old jewelry store whose contents we bought over 40 years ago. This was a novelty back in the 1930's...looking like the glittery ring that it is but with a little added 'secret'. In back of the rhinestones, there are little openings and the center one has a little swab of cotton that you douse with your favorite perfume. As you move your hand, the scent follows. This was never used and is still in 1930's 'like new' condition. Ring size is 8.5. Setting is silvertone metal.