To hopefully help anyone out that buys eggs at Costco like I do:

• Despite the picture used in the article, these are the brown eggs, not white ones.
• They come in the plastic eggshell container in packs of 24
• You're looking for the expiration date of Jan 6, and a Julian code of 327. These are printed directly on the plastic ON THE SIDE of the container, not on the top. It's very easy to not notice the printing at all if you're not specifically looking for it (or sometimes even if you are).
• Costco97.com has a much clearer image and explanation of what you're looking for here
• You would have most likely purchased these Nov 22-26 (The Saturday to Wednesday BEFORE Thanksgiving in the US)

Important:

The targeted egg cartons were sold in 25 Costco stores in Alabama, Georgia, North Carolina, South Carolina and Tennessee beginning Nov. 22.