McCartney’s collection encompasses a broad swath of what once flooded the market, including cast ... flat irons patented in 1870 by the rare female inventor Mary Florence Potts; and an extremely ...

BL: Okay, so you’ve got to make sure it's flat on the ... for one size of cast iron that they’ll get the most use out of, what would it be? Some of these old cast irons will have big eights ...