这钱币是哪国的

您说的50分，是1998发行的那款，材质为75%镍+25%铜
图案是发现巴斯海峡的纪念，一共有两个男人头像，一个是乔治巴斯，另一个是弗林德斯，俩人分别发现是巴斯海峡和弗林德斯岛。

您这款硬币在澳洲一共是发行了22,389,200 枚。并不是太值钱，大部分当地人都拿着当流通钱币使用。如果在国内卖，运气好的话，可能值10块钱吧。

以下是澳洲现在所有流通纪念版本的硬币的详细资料，楼主感兴趣的话，可以看一看。

• 1970 50c Captain Cook Bicentenary, mintage: 16,548,000
• 1977 50c Queen Elizabeth II Jubilee, mintage: 25,067,000
• 1981 50c Charles & Diana Royal Wedding, mintage: 20,000,000
• 1982 50c XII Commonwealth Games, held in Brisbane, mintage: 49,610,200
• 1986 $1 International Year of Peace, mintage: 25,100,000
• 1988 50c, First Fleet Bicentenary 1788-1988, mintage: 8,100,000 (rare)
• 1988 $1, First Fleet Bicentenary, Aboriginal design, mintage: 20,400,000
• 1991 50c 25th Anniversary of Decimal Currency (Merino ram's head), mintage: 4,700,000 (rare)
• 1992 $1 Barcelona Olympics, mintage: unknown
• 1993 $1 Landcare Australia, mintage: 15,000,000
• 1994 50c Year of the Family, mintage: 20,876,100
• 1994 $1 Dollar Decade 1984-1994, mintage: unknown
• 1995 20c 50th Anniversary of the United Nations, mintage: 4,835,000
• 1995 50c End of World War II 50th Anniversary, Sir Edward 'Weary' Dunlop, mintage: 15,869,200
• 1995 $1 Waltzing Matilda, mintage: unknown
• 1996 $1 Sir Henry Parkes Centenary, mintage: 26,200,000
• 1997 $1 Sir Charles Kingsford Smith Birth Centenary, mintage: 24,381,000
• 1998 50c Bass and Flinders Anniversary, discovery of Bass Strait, mintage: 22,389,200
• 1998 $1 Howard Florey (Only proof and mint packs), mintage: unknown
• 1999 $1 International Year of Older Persons, mintage: 29,218,000
• 2000 50c Millennium Year 2000, mintage: 16,630,000
• 2000 50c Year 2000 Royal Visit, mintage: 5,145,000
• 2001 20c Sir Donald Bradman Tribute, mintage: 10,000,000
• 2001 20c Centenary of Federation coins for each of the 9 states, territories and regions, mintage (total of all coins): unknown
• 2001 50c Centenary of Federation coins for each of the 9 states,territories and regions plus one for Australia, mintage (total of allcoins): 64,271,600
• 2001 $1 Centenary of Federation, mintage: 27,905,390
• 2001 $1 International Year of Volunteers, mintage: 6,000,000 (rare)
• 2002 50c Year of the Outback, mintage: 11,507,000
• 2002 $1 Year of the Outback, mintage: 35,373,000
• 2003 20c Australia's Volunteers, mintage: 7,574,000
• 2003 50c Australia's Volunteers, mintage: 8,202,000
• 2003 $1 Australia's Volunteers, mintage: 4,149,000
• 2003 $1 Centenary of Women's Suffrage, mintage: 10,007,000 (rare)
• 2004 50c 2004 Student Design Australia - Animals, with wombat, koala and lorikeet, mintage: 10,577,000
• 2005 20c End of World War II 60th Anniversary, mintage: 10,000,000
• 2005 50c End of World War II 60th Anniversary, mintage: 10,000,000
• 2005 $1 End of World War II 60th Anniversary, mintage: unknown
• 2005 50c 2005 Student Design Commonwealth Games, mintage: 21,000,000
• 2006 $1 50th Anniversary of Television, mintage: unknown
• 2007 $1 75th Anniversary of the Sydney Harbour Bridge, mintage: unknown
• 2007 $1 APEC Australia 2007, mintage: unknown

伊丽莎白1982年澳大利亚,英联邦运动会布里斯本50美分,有收藏价值

这是澳大利亚的50分纪念币。品好的价格8-15元一枚。