
1917
printed · earthenware
The marks were reproduced in the 1917 Pottery Gazette; this documents publication, not a complete use interval.
Pottery & porcelain · a closer look

1917
The marks were reproduced in the 1917 Pottery Gazette; this documents publication, not a complete use interval.





Undated
The caption covers two successive versions (1908–1928 and 1928–1937); no single interval is assigned here.