Dragon Cap badge

[Danger]

Hi Guys,

This is the other cap badge that interests me.
I have it in one of my cases on display, but have never known it's name.
I've seen 3 names pop up while searching for the regiment or battalion.
Can someone please set me straight?

The Buffs? East kent Regt?
The Brecknockshire Battalion?
1st Monmouthshire Regiment?
Welsh? Jerry B will know. Cymru?
My Dad is Welsh, and if I remember rightly I picked it up as a kid because it looked like the Welsh Dragon.

Is it WW1 or WW2?

Thanks in advance.

Danger

[Watchdog]

Of course Jerry will pin it for you instantly but until he gets here I think it is a Welch Regt officers (bronze) right side collar badge. An indication of size is useful with something like this but I am guessing this is smaller than a cap badge.

Jerry will be more specific I'm sure

Regards

Mark