Both of them are roman numerals, one of his mum's birthday and the other of North West's. This image appears in the gallery:30 Pictures You Might Have Missed This Week (23rd February) 10. Both of them are roman numerals, one of his mum's birthday and the other of North West's. Picture: Instagram 30 images See the full gallery: 30 Pictures You Might Have Missed This Week (23rd February)