It is English not Asian, not sure on brand though, when you lift the skirt up what is on the name tag that should be pinned under it.
Few more pics of it from a couple of feet away so I can see the rest of it would help and the girth straps and stirrup bars too
Oz
If you lift up the skirt on most named/branded saddles you will find a nameplate tacked on to cover where the seat meets the flap by 2 brass escutcheon pins like this sample below, some can be very small