antique silvered mercury glass decanter bottle stopper, old silver color

Vintage silver mercury glass bottle stopper - we have no bottle for this, alas - but it would make a beautiful stopper for a plain (not mercury glass) crystal or pressed glass bottle, too! It measures about 2 3/4" tall end to end, and 1 1/4" in diameter. The are a few spots to the silvering, no chips or cracks.