As far as I know, the hard metal pockets are standard on all 230 and 250 pagodas as well as Euro model 280s. The US 280 has the pleated pockets you were apparently furnished. The supplier should be able to provide pieces to cover the metal pockets. It is what I received when I ordered new interior door panels. I had to contact the supplier who then sent out the pleated packets.
Gus
68 280sl