I wonder if it's an Amana clone. For a while there, Amana seemed to be the only manufacturer turning out bottom freezer models, and the Continental might be of coincidental vintage.
I didn't want to say it...but I do think it looks like an Amana Fridge from this period. And that is not a bad thing for the Amana Refrigerators that were built during this time period.
I know several people that have Amana fridges that were built during this period that are still going strong. Of course they kept them clean and such.