The top of the tile looks as though water may have gotten underneath the outer surface (see the last photo).
Gorgeous Orrefors Child & 2 Frogs Swedish Crystal 6.5in Tall Standing Art Piece
Royal Worcester ~ Art Deco Lady Figurine ~ Annie ~ Pizzazz Collection
Mad Monk Clay Pottery Wall Hanging Tile Bamboo Art by CC Lee 6.25"x7.5"
Vintage Art Pottery Drip Glaze Candle Holders Pink Purple Handmade Lee Levy
Wong Lee WL 1895 Black Brown Art Deco Porcelain Pottery Vase
Lorna Bailey The First Millennium book Ceramic Art Design Millenium Dave Lee
