The serial number can be found......

The serial number can be found.......... on a label on the edge of the door of the newly built-in oven - but the label was on the side edge 10 inches from the front and 3 inches away from the wall (the front edge would have been far too simple) - no way could I read it! So I used a mirror to read it - but it was quite small. Then, inspiration, take photo of the mirror with the iPhone then hold the result to the mirror to read it clearly!
At least it wasn't on the back of the oven - that would have been a real problem!