W124 E320 wagon part search

[tame55]

Since I purchased my wagon the black trim piece that sits between the rear hatch lock cylinder and the hatch sheet metal has been missing. Does anyone know if this is a part I can source? Or should I look for a used lock assembly to pull from?
I have posted in for-sale forum too, but wanted to see if anyone knew a place to buy or a part #

Some water gets in the rear hatch when it rains, but the lock mechanism is in good working condition so seems a waste to buy the replacement cylinder just for the trim piece.

Thanks
Luke