Is this an egg or what?

Well the other day i went to collect my hens eggs and this is what i found! This really huge egg! This is the fourth one i have had like this. The first one weighed in at 98 grams...the next 102gm... then 104gm.. then the latest weighed in at 106grams! I had that for my breakfast and it was a double yoker and very yummy too!!! they all were. The chook still lives! In the pic the egg in the centre of the bowl is a normal sized one . All the other ones are the extra-large ones that my son wanted to keep for souveniers. He taped the shells back together as you can see!