Le Creuset small cast iron pan (Berkhamsted HP4)

Le Creuset small heavy frying pan, cast iron (including handle), in classic volcanic orange.
Diameter 20cm
Handle 12cm
Height 4cm
Weight 1.2kg
In generally good condition but there is some corrosion showing inside the pan, as can be seen from the photos. You may be able to apply something to restore the inner surface to its original condition.