Die number for SG55;
(WW2 is embossed at the base of the neck)
The WW stands for William Wyon, the engraver. These letters and numbers can be faint or even invisible.
The die for the embossed stamps was engraved by William Wyon, and based on his Wyon City Medal of 1834 which depicted a fifteen-year-old Victoria
Die essay, note the absence of the hair pendant curls
Ormand Hill's pen and ink, on a white relief, original design