From the link Padi provided 

Items that won't be authenticated

Even if a listing had the eBay Authenticity Guarantee badge, it won't be eligible for the program if:

The buyer's delivery address isn't eligible (outside Australia)

The buyer didn't complete checkout and pay on eBay

The seller offered local pickup.

My interpretation is:

As the items have been sold to overseas buyers, they will not be authenticated by eBay and have been shipped directly to the buyers.