Hi All, Yes It is a unique burner cover indeed, I sent Steve some photos of the burner cover from a No.2 version, thinking it would be the same type of drop-and-turn assembly which Bobby has now confirmed, it was just a matter of determining the burner size. As I said before it is a very lucky find, it's the first I've seen in brass. I don't know what I'd do with that, clean it up removing just the heavy tarnish or polishing it to shiny brass, your choice.
Good to hear from you Bobby, It has been very quiet here lately.
Regards All,
Willis