My brother has 3 of these toilets in his house and I am not sure what toilets it replaced. His house was built in the 1970s or 1980s. The original toilets replaced either American Standard or Kohler. The Delta Corrente toilets are discontinued.
Weird toilet - the fill valve is crooked and is connected to a hose through the back of the tank, seems to work though. The flush is too short and a very small amount of water in the bowl.