I believe it is a knobby or warty gourd that is frequently sold in seedling mixes of some knobby, some crook neck, some straight and some round or spherical. but just in case I have forwarded the images to a vegetable specialist and will follow up when I get their response.
Daniel Becker, Extension Associate for Fruit and Vegetable Production, said - Looks like one of the “warty” ornamental gourds. They are classed as Cucurbita pepo, so they are related to squashes and pumpkins. They are purely used for ornamentation, as in centerpieces, harvest decorations, porch settings, etc., not for culinary purposes.