Hello I may have what you need or part of it. I cleaned out a building many years back and just happened to hang on to this wheel. It looks like what you need and has a ring and partial cap. It has been out of the weather for decades so its really nice. Seems to have the 16 slots to. My poor little wife had to hold the kerosene lantern and we had to walk miles in the pouring rain but I got you a photo. I will need to run it into town to remove the tire. Probably about ten bucks or so? I am willing to ship to U.S. for you but have no clue what it might cost. I have no clue on what its worth but others seem to think Millions. Make me an offer. I am not that proud of it. PS I may have some of the center cap pieces NOS? I have many parts and remember seeing something with the ribs like the caos you are looking for. It would take some time to hunt.
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