Thanks thats helped having the different types.
I just found this picture on good old ebay!
Colour looks different to me though?
WW1 Economy badges are an absolute minefield when it comes to buying a genuine one. Being a single metal a lot of the manufacturing traits like sweatholes for example found on bi-metal ones are absent. For what it's worth I'd avoid any with lugs rather than a slider and I'd look for those which appear more yellow brass rather than gilding metal. I'd also like to see a crimp line at the top of the slider although some makers' badges don't always feature this. All genuine ones I have had appear like this and it's really only something you pick up with experience. Ebay is really not the place to buy them due to inconsistencies in photographic flash unless you really trust the seller.
Your QVC one appers to have N/S lugs? Unusual.