AUSTRALIAN GOLD SOVEREIGNS. Victoria, 1837-1901. Gold Sovereign, 1879-S, Sydney. St George. 7.99 g. 22.05 mm. Mintage: 1,366,000. Marsh 116, S.3858A. Nice dark-golden colour and lots of lustre. The St. George reverse 1879 Sydney mint sovereign is scarce, especially in this grade. We grade About EF. Spink lists EF at £850. Housed in a secure plastic holder, authenticated and graded PCGS AU55, certification number 33625610.