This is a very interesting memorial brooch for the Duke of Wellington who died in 1852. It is of glass and metal (though the bar decorations are silver) but the English dealer from whom I bought it said he had never ever seen one like it before. It measures 1 and 1/2 inches North to South, and 1 and 1/8 inches East to West. It has its pin and fittings also. It weighs 10.94 grams.