The attached page is from a 1970 Superior catalog. It shows bot simulated and real wood wheels as being available and also simulated walnut wheels without the rivets so that the rim is similar to what GM offered on their N34 wood wheels. Here's an ebay auction for one without the rivets and these are very uncommon...
https://www.ebay.com/itm/1960s-SUPER...893a%7Ciid%3A1