Odd button from garden
 

I found what appears to be a button while weeding yesterday.
It's an inch in diameter, and made of a copper alloy - I suspect bronze. It looks as though it may have been gilded - some parts are still quite shiny. It _could_ have been mounted on an iron pin in the centre of the back, but this is corroded away.
It has on it what looks like the Warwickshire Bear and Staff, surmounted with a crown. I could try and photograph it - but I don't really have a suitable camera.
As background our garden is old enough that bits of clay pipe turn up; and there was a WW2 bomber base half a mile away.
Any ideas?

Is it like this? This is Warwickshire Yeomanry, but I've never seen this button with a crown above it though.
Chris

That's the bear and ragged staff on its own.
I've contacted the regimental museum too.

I've attached a rather poor picture...
 

Because this is the best my camera will do.

It looks like a livery button, worn by uniformed staff at manor houses and the like.