There is some crazing here and there and her cheeks appear a tad dusty but more so on her left side. I saw another fellow Ebayer sell the same item and they described it as from 1946. The item "Vintage LEFTON'S MERMAID japan IRIDESCENT SHELL wall PLAQUE art PORCELAIN figure" is in sale since Tuesday, April 7, 2020. This item is in the category "Collectibles\Fantasy, Mythical & Magic\Mermaids".
The seller is "4-less" and is located in Kennebunk, Maine. This item can be shipped to United States.