Thanks everybody, lots of good information there.
Sorry about the confusion but the measurements in the photographs are in centimeters. It's 60mm high and 52 mm wide (approx. 2 1/2 inches x 2 inches)
I came across the picture below when following internet leads this morning. It is similar in style. I see the regiment number is a separate badge below the bugle. The picture was titled "33rd Belgic".
Excuse my ignorance but what is the difference between the Light Infantry and The Rifles?
