Hi i purchased a few items online in one lot and in with them was this little pot. Now as well as not knowing what the pot is for as it looks like there may have been a lid for it but also i cannot figure out the mark which is a crown above a cirvle which says made in england and next to this a cross mark with dot above. Would appreciate any help. Size of pot is 6cm diameter across base and 4.4cm diameter across the top and height is 3.4cm.

Thanks