I have scoured the web, reviewing photos and reading about faience, but have yet to identify these plates. Apparently they are rare hand-painted majolica/ french faience plates??? Each plate is decorated with a maroon tulip on white background surrounded by a green border edge. Makers marks read: underglazed "St. Amand Hamage Nord" and incised marks "Terre de fer" and "Q". Amazing condition for its age... only a few glaze shortages, which are barely noticable. According to research these plates were made by the St Amand and Hamage factory between 1810 and 1880 - don't know exact dates.. There are only a few manufacturing flaws. On one plate, only a small piercing mark in front due to the mould. On another plate the stroke of the paint brush is missing on the flower.
I appreciate your help on these! I'm wanting to know history and value, please.