Where is the serial number on a Electrolux cooker?

Open the oven door and check the frame around the cavity. The data plate gives the PNC and serial number.

Where the rating plate is1
  1. On the front frame, visible with the door open

Source: Electrolux UK – Where can I find appliance's PNC number?

How old is my Electrolux cooker?

Copy the serial number from the plate, or paste everything on it.

Electrolux

All Electrolux appliances