how do I contact Greg McDonald - Australian coin expert - via internet?

I couldn't find an email address for Mr. McDonald... although you might want to as around here:

http://www.coincommunity.com/forum/

This seems to be a group that corresponds with him... good luck !

VST AUSTRALIAN PRE-DECIMAL 1910-1964 COIN ALBUM BLUE COLOUR PADDED BINDER $45.79

1942s Australian Florin. A hard coin in Uncirculated ! $123.89

2011 .999 SILVER BULLION 1 OZ AUSTRALIAN KOOKABURRA COIN UNC PERTH LUNAR VIDEO $52.69

The 1990 Coin Set, Royal Australian Mint, Uncirculated, Aboriginal $75.00

2009 One Dollar 60th Anniversary of Australian Citizenship $1 Coin B Privymark $11.84

GENUINE AUSTRALIAN CURRENCY COIN SET GREAT AUSTRALIA GIFT $6.00

2012 Australian 1 oz Koala .999 Silver Bullion Coin $42.00

2011 Australian .999 Silver 1 troy oz Koala Bullion Coin Unc $46.55

2011 AUSTRALIAN LUNAR YEAR OF RABBIT SILVER 3 COIN SET SERIES II LOW MINTAGE $575.00

2011 Australian Kookaburra Bird 1 oz Silver Coin *BU* $46.65

15 AUSTRALIA COINS - LOTS OF KANGAROOS - OLDER STUFF $1.74

# 15 - 1984 Australian One Dollar - PROOF in Mint Box- A COLLECTORS DREAM COIN $5.99

2012 Australian 1 oz Koala .999 Silver Proof Bullion Coin $48.28

VINTAGE 1943 AUSTRALIAN SILVER COIN BRACELET VERY COOL $19.99

2012 Australian Kookaburra 1 oz .999 Silver Coin $56.00

2011 2 oz Silver Lunar Australian Year of the Rabbit Coin Bullion $112.99

2012 1/2 oz Silver Lunar Australian Year of the Dragon Coin Bullion $47.99

$37.36 Australian Legal Currency Australia coins lot dollars bills notes $26.51

1916m Australian one shilling good coin .925 silver no reserve $9.16

2012 Australian 1 oz Koala .999 Silver Bullion Coin $42.00

Australia 1997 solid .999 proof Gold Coin "Australian Nugget - Kangaroo" 1/20 oz $141.47

1972 50c Coat Of Arms Australian 50 Cent Coin Queen Elizabeth II $5.38

1943 Australian Florin two Shilling .925 silver graded (EF) great coin $8.80

2009 Australian Koala .999 Silver 24K Gilded Coin $51.01

1942 Australian Florin two Shilling .925 silver graded as (EF) EXCELLENT COIN $9.32

2009 Australian Koala .999 Silver 24K Gilded Coin $48.00

The Australian One Dollar Five Coin Set 1984 - 1992 $64.63

2008 Australian Koala .999 Silver 24K Gilded Coin $89.00

100x 1920 AUSTRALIAN ONE FLORIN SILVER COIN REPLICA $249.95

UNC 1993 Australian Kookaburra 1ozt .999 Silver Coin LCC - J3 $41.05

2008 Australian Koala .999 Silver 24K Gilded Coin $88.01

2012 Australian Koala, 1oz Silver Coin, In hand ready to ship, BU!! $37.00

UNC 1993 Australian Kookaburra 1ozt .999 Silver Coin LCC - J3 $42.50

2008 2009 2010 2011 2012 Silver Lunar 2 Oz Series 2 Australia Coins Set with Box $1,100.00

2001 Australian 1 Oz. Silver Kookaburra $1 Coin $41.14

2011 Australian Koala 1 oz .999 Silver Coin $54.00

2011 Australian Koala 1 oz .999 Silver Coin $55.00

2012 Australian Kookaburra 1 oz .999 Silver Coin $56.00

2012 Australian Kookaburra 1 oz .999 Silver Coin $58.00

1935 George V Australian 2/- Shilling florin.925 silver good excellent coin $13.57

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2011 AUSTRALIAN KOOKABURRA 1 OZ FINE SILVER COIN in CAPSULE $67.00 NEW 2011 AUSTRALIA KOOKABURRA Silver Coin in capsule. These coins are minted by Perth Mint Australia....

2010 Australian Koala 1 Troy Ounce Silver Coin $67.31 ...

2009 Australian Koala 1oz Silver Specimen Coin 99.9% Pure Silver $49.99 2009 Australian Koala 1oz silver Specimen Coin The 2009 Silver Koala is the first coin in a new series of iconic Perth Mint releases depicting Australia's most endearing marsupial. Scheduled for release each year with a new design featuring a cuddly koala, this stunning series is designed to appeal to collectors and gift buyers. 99.9% Pure Silver This new Silver Koala coin is struck from 1oz o...

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Australia Kangaroo 2008 $1 Selectively Gold Plated Kangaroo Australian Royal Mint Australia 2008 $1 Selectively Gold Plated Kangaroo Australian Artist Series (Reg Mombassa) The Great Australian Artist series continues to showcase famous Australian's artistic interpretation of the Royal Australian Mint's iconic Kangaroo coins. In 2008 the image has been designed by Reg Mombassa with his signature humorous caricature twist. The series continues with the selectively gold plated silver ...

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