Australia 1927 Parliament House Florin

I couldn't even begin to grade that.. but it's GORGEOUS!

Australian currency exchange rate today = one dollar AUS = 0.713796

grading in McDonalds Guide is
---------Aus------------------US
Very good 7-----------4.99
Fine 12------------------8.56
Very Fine 25---------17.84
Extra Fine 60--------42.82
aUnc 135--------------96.36
Unc 485--------------346.19
Gem 875-------------624.57



again here are the grading terms used in Australia

Brilliant Uncirculated -FDC (Fleur de Coin - flower of the die.
Also referred to as FDC (Fleur de Coin - flower of the die). Although struck with normal dies, a coin described as BU is pristine, almost proof like in appearance, being perfectly sharp, absolutely flawless and showing no signs of wear or bag marks. On the US grading scale, such a coin is described as MS-65. Grading at this superior level has become more complex in recent years with distinctions being made in many catalogs between (from highest to lowest state of preservation) - FDC, GEM Uncirculated and Choice Uncirculated.
Uncirculated
A coin which shows no signs of being in circulation. Coins in mint rolls are classed as uncirculated. Due to high-speed production techniques, even uncirculated coins may show slight imperfections such as minor bag marks or tiny rim indentations, especially on larger coins.
Extremely Fine or Extra Fine (EF or XF)
Under magnification, these coins show only the slightest amount of wear in addition to slight bag marks. Wear will be confined to the very high points of the design and the natural mint lustre common to uncirculated coins will be still almost intact.
Very Fine (VF)
Slightly more wear will be evident without magnification but the coin is still in a high state of preservation. A magnifier will show numerous light scratches over the high points and on the fields of the coin. Most of the high points will be affected and only traces of the mint lustre will be present.
Fine (F)
Considerable signs of wear will be apparent on raised surfaces and the fields of the coin will be quite dull. Almost all sections of the coin will exhibit some forms of wear. Generally there will be no traces of lustre and the rim border will be smooth in parts.
Very Good (VG)
A strange description for a coin which is rather ordinary. If you see a coin for sale described as 'circulated', you should assume that this is the best it will grade. The whole of the coin is showing significant amounts of wear although all of the main detail is still visible. Usually only scarce coins and those of historical significance are worth collecting in this condition.

I'll muddy the waters a little more. I'd call it AU due to the obverse fields.