rare 1850s antique white ironstone china plate molded hearts border Barrow & Co Adriatic

Antique English ironstone china plate in the Adriatic pattern (heart border), 1850s Barrow & Co, marked with the diamond shaped registry mark. I know the mark is upside down in the pictures, it's hard to make out and I was having so much difficulty getting it to show up in the photos at all!

This is very heavy, it's a large plate 10 1/2" in diameter. It's in exceptionally good condition - it does show spots and wear, but no chips or cracks. Amazing at nearly 175 years old.