Does this dozen eggs look odd to you? They should, so look again if you do not notice what is wrong with them.
In the past, when people mostly got eggs from their own chickens or a local small producer, eggs probably varied in size like these. But these came out of a package labeled "Grade A Large Eggs" so they ought to be pretty uniform.
Once I formed a hypothesis about this, I asked my wife and kids if they could think of some reason for a package of eggs being random sizes. Having never purchased eggs, the kids had no clue. But my wife and I knew: When you buy eggs, you check for broken ones and take a whole different carton if there is one broken one. Some enterprising clerk must have consolidated unbroken eggs from different packages so that one broken egg costs one egg and not a dozen eggs.