Super Bowl LII jersey help

Finally have a bit of cash on hand to buy a jersey before start of season. Unfortunately, majority of sizes are OOS. Going to have to scour eBay. How can I tell if the jersey is authentic? Some have what appears to be a screen printed shiny patch and others have something that’s a bit more on the fabric side that’s been stitched. Any help is appreciated. Looking to get an Ertz in Size Large or XL.

Guess what? Found here (~) Show your Eagles Pride!