That one burner pictured in the ad doesn't even appear to be a true Corox type. I wonder if they all were replaced with Calrod types. Not original, but they might be easy to find replacements for as a result.
I'd say that range can't be much newer than 1952, and they'll be lucky to give it away. It's not too far from the MGM/SONY facility, so the seller perhaps is hoping the property department wants to add it to their inventory.