Note: Stamps from the edge of the sheet were sometimes missing the silk thread
Die number for SG55;
2
(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