Looking through a group of pennies sent by a friend, I just noticed one has some interesting separation in the serifs. It looks to me very much like a doubled die, where this would be the earliest I have found in an Australian coin. :smile A few details: very nice lower serif separation on the TT in BRITT, and look at the shape of the colons! more doubled serifs and misshapen colons: continuing to a lesser degree further around the legend:
