Set of 3 Vintage Mermaid Figurines, 3 inch, Floating Hair, 1950s Japan Bradley ?

Super cute set of 3 vintage mermaid sisters from the 1950s to 1960s. Bisque bodies with just a light glaze on their green tails.
They are about 3 to 3-1/2 inches long and 2-1/2 to 3 inches tall.
They have floating underwater hair that is blonde with darker details. Some polka dot details on their little tube tops, gold and yellow details on their tails.
They are stamped 'Japan' on the bottom of each.
I've seen these online attributed to Bradley, in several different places. But they have no labels.

All three are in excellent condition. No chips or cracks, no paint loss.