So sorry to be so long getting back to you. Trying different camera settings. Still little luck. Mark is only on one cup bottom. In total only 1/4 inch long with a stain on most of it. Under magnifier still looks like blue crown shape with a cross at the top right. The pottery is quite transparent and all hand painted.
Allison
Thanks for reply. There is a mark on the bottom. I will send the pic. Can barely see the mark so pic almost useless. It looks like the top of a blue crown but most is smudged with some kind of yellowish stain. Also there is a c with a circle – I assume means copy write? on the lid. The set is raised.
Allison