On the Overview of the set down a bit on the page is someone's post that says, "The Green Linen parallel set is only distinguishable from the Windsor Green parallel set by having a slightly textured border like woven linen. The Windsor parallel cards are smooth without texturing. I needed a magnifying glass to see the difference."
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“Aslan didn't tell Pole what would happen. He only told her what to do. That fellow will be the death of us once he's up, I shouldn't wonder. But that doesn't let us off following the signs.” - Puddleglum in The Silver Chair by C. S. Lewis