
found George Ah Kin in 1903

NSW ER 1903 EDEN MONARO, polling at Bemboka
AK KIN, George coach proprietor, of Bemboka. NO others with that surname at that polling place.
(yes, that is AK KIN, not AH KIN and there's a space between the two "K"s). NO others with similar surname at that polling place either.
Of course there's plenty of printer errors, so that could be a printer error. What it is telling me is that George AK KIN, the coach proprietor, was a British Subject and was aged 21 years or over. Whether he was a British subject by birth or by naturalisation is NOT something I would ever expect to find on an NSW electoral roll. But if he died in NSW, I would expect to learn from his death cert (or official transcript) where he was born, and how long he had lived in the colonies/states of Australia.
Cheers, JM