I'm going to attempt vw speke again I thinkYou'd need VW part number 7H7 867 827 as it is probably the left side (when sitting in the vehicle).
Don't seem to find it online like this.
Actually it doesn't do much more than covering the hole for the screw. It is a non-essential part, so I'd leave it like this for now.
The only time you will see it's gone is when you open the boot.
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