Hi,
It is a bit harder to tell with the coin laying down on an angle, but that one looks like the more common 1943I using the later Bombay reverse die. Some of the early coins still had the dot penny dot and the I on the obverse under the King's neck, but the reverse denticles were longer than the normal coin. The long denticle variety is the scarcer type. Cheers.
ps Check out this site below for information on Aussie pre-decimals. The links to die-pairs etc are about 2/3rds the way down the page.
http://www.triton.vg/ozcoins.html
