Chinese Kangxi ware (17th to early 18th century) slender necked, stunning painted porcelain vase

Hand-painted antique porcelain vase with slender neck and bulbous body. ware, as identified by patterning, handmade form (note unevenness of neck placement), sapphire blue under-glaze painting, and concentric ring marks on the unglazed, stepped foot base.
Rare, beautiful form surviving in gorgeous condition.
Height: approximately 150 mm