Cleaning out a house and came across this. The little cup at the top swings back and forth. Any ideas what it is ?

Cleaning out a house and came across this. The little cup at the top swings back and forth. Any ideas what it is ?
Answer: It’s a bridal cup. The small swiveling cup and inverted hollow dress were designed to allow both bride and groom to drink simultaneously to toast their wedding. The groom would drink from the larger cup (the inverted skirt), and the bride would drink from the small swivel cup.