Thanks for your thoughts on my cow dish. Much appreciated.
I considered it being a replica as well, but there is quite a bit of age wear on the parts of the base that form the stand, along with several little chips and flakes missing around the lid rim consistent with it having been used over a period of time.
It looks bright and spangly new in the photo as it's so very actively glowing. It was quite grubby with grime that I had to soak and scrub off to be able to see it as it is now. Overall my feeling is that it's not a replica (certainly not a recent one if at all), and that it dates from the 1930's-ish.
Having said that I'm open to other suggestions and opinions.