In French these are known as Fer Plat or Trieste Fer, and are made from Fonte.
Rare Antique c19th French Sad flat Iron NS No 6 Fonte Fer Plat
Rare Antique c19th French Sad flat Iron Extra Port No 6 Fonte Fer Plat
Rare Antique c19th French Sad flat Iron GF Anchor 16 Fonte Fer Plat
Antique c19th French Sad flat Iron Camioneur No 5
Rare Antique c19th French Decorative Sad flat Iron Fonte Fer Plat Door Stop no 6
