The bottom is marked but very difficult to read. A number 55 is visible.
Vintage Pottery Bowl Model 205 II with Optional Brass Bracket, 50s/60s
Vintage Art Deco Slag Glass Pottery Vase Chocolate Brown Swirl- 253
Vintage Leedsware Creamware Chocolate Pot with Twisted Handle on Pierced Stand
* STUDIO POTTERY BOWL FISH SEAWEED BOWL BEIGE BLUE VINTAGE
Vintage Australian Pottery Bowl 11cm Studio art tri footed bowl
Margret Ewert Studio Pottery Visbek Bowl Pottery Bowl Contemporary #1