These tiles are more than likely handmade. That is why the variations in size and shape and thickness.
4-Vintage Delft 5" Square Ceramic Tiles Hand Painted Holland
Pair Hand Painted Dutch Delft Polychrome Square Pottery Tiles 5 1/8”
3 Vintage 1960s Italian Wall Tiles Hand Painted Terracotta
Vintage Desuir Hand Painted Terracotta Sun Face 18.5" Dia... RARE POTTERY ITALY
Hand Painted Wall Tiles Trivets Coasters Set Of 4 Different Images Men Hunting
SBERNA DERUTA~Hand-Painted~Sun Moon Ceramic Tile~Made In Italy~4”Square~Set Of 4
