I have had the plain Bonnet Head Brooch, but this is the first time I have seen it with the Swirling 3 Dimensional Lucite Back that this one has. And being a great shade of Green also helps make it one of the best examples I have ever seen. As with all Elzac it is unsigned, but as obvious example of their workmanship. It measures 2 3/4" x 2 1/4", and is 1" deep. This is a great get me noticed conversation piece of a brooch.