I have ascertained this dish is definitely Royal Crown Derby, but the marks allude everyone??? I emailed royalcrownderby.co.
uk with a picture of the stamp - no reply yet.
I have added the extra description, but if I search using the word Sardine box, it doesn't find it. Just have to hope it is found closer to the day. Would appreciate your comments on the listing (if that is allowed in this Forum) the item No. is 261056676660
If I had known of this site, I wouldn't have listed so fast! This pot was in the house where I was born on Ashdown Forest East Sussex. When we moved this was among other items not touched for years in our loft and pulled out to do a boot sale.
The picture below has identical flower patterns and is Royal Crown Derby (not my item).
Thankyou for all your help, I look forward to getting home just to view your responses.