James Wyon's Type1 Sydneymint Sovereign Portrait Of Victoria

I've been reading (lurking in?) this forum for quite a few years now & at last have decided to register so I can both contribute & ask questions. I'd like to start with a question appropriate to my alias.

Does anyone know if the James Wyon portrait of Victoria that was used on Type 1 Sydney Mint 1855 & 1856 sovereigns & half sovereigns was ever used on any other coinage anywhere else in the world?

I ask this because William Wyon's Young Head portrait of Victoria (William was James' cousin), which appeared on Australian sovereigns & half sovereigns from 1871 to 1887, was also used for much other British coinage as was his beautiful Gothic portrait of Victoria. Between 1857 & 1870, Leonard Wyon's "plait under the ear" as I call it or as it is more prosaically known, Type 2 portrait (Leonard was William's son) was used on Australian sovereigns & half sovereigns but I haven't come across that one anywhere else either. Leonard's famous "bun" portrait of Victoria, although not used for Australian coinage, was used in Britain & other places in the Empire & he had also designed the reverse of the Sydney Mint sovereigns that was used from the pattern in 1853 until 1870. William & Leonard obviously enjoyed much more success than James.

According to the RAM's Mint Issue magazine #54 of September 2003, the Wyons were not renowned for the strength of their constitution and in 1860 James was placed in a mental hospital & died aged 64 in 1868, his cousin William having pre-deceased him in 1851 aged 56 long before his work was used in Australia. Leonard died of Bright's disease and apoplexy aged 65 in 1891.