In 1834 he modelled the head of Princess Victoria when she was 15, and this was subsequently used for the City Medal struck in 1837 to celebrate her first visit to the City of London after her accession to the throne when she was 18. This was the model for the head on the line-engraved stamps of 1840-79, the embossed stamps of 1847-54 and the postal stationery 1841-1901. The primary die used for the embossed issue was engraved by William Wyon, and the 1s and 10d stamps have the initials ww along with the die number at the base of the neck.
His design also influenced the surface-printed stamps first printed in 1855. The name of William Wyon is also well known amongst coin and medal collectors because of his prodigious output and artistic skill.
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