Antique Korean porcelain bottle of an octagonal faceted form, with long neck fluting slightly at the rim, covered in a translucent crackle white celadon glaze. The foot is deeply recessed with buff edges.

18th/19th century Chosun Dynasty

For a similar piece, see reference :
Bonhams New York Catalogue "The Korean Aesthetic: The Collection of Robert W. Moore, Wednesday March 15, 2017" pg. 22

Size: 6.5" W x 11.5" H