Handmade Blue Pottery Hornet Catcher

Am I entirely sure that this is a hornet trap? Not entirely. It does hang upside down with a narrow mouth on the bottom so I do think that this would work perfectly.

Measures 4-1/4" across (12-1/2" around the widest part) x 7-1/4" in height. Opening is 1-1/4"

In beautiful condition.