I have a 12" oblong shallow dish, no makers stamp on back but does have imprinted number 334? (very hard to see) and also a freehand imprint X71..sure of the X7, but the 1 is debatable. I also have 6 sideplates (8 sided, 6") with the Burslem stamp. These were my Grandmothers so will be quite old...I imaging she got them as a wedding present in 1923. Thanks for any replies....