Old Cut Crystal Glass Decanter or Perfume Stopper

Old cut crystal glass stopper for a decanter or perfume bottle. It looks old, but being an auction piece I don't know the age. It measures 3 inches long and is approx 5/8 inches across on the smallest end of the stopper that goes into the jar. It graduates up to 3/4 inch. It is in perfect condition, no chips, no scratches.