1st King Edward's Horse Badge ?

[wig]

Hi there, I'm new to the forum.
A great uncle of mine served in the 1st King Edward's Horse.
I've been on the hunt for a cap badge...
Here's where I need your expertise folks !
Could somebody give me the correct/authentic look/description ?
I've seen silver/white metal looking badges on the net.
I'd read elsewhere that these are fakes...
What finish should the badge have ? i.e. Gilded/Brass like the 2nd KEH ?
Also, should the badge have a slider instead of lugs ?
Any feedback would be most appreciated.
Cheers
Wig