none 

Statements about this table:
swimming be the reverse in i series
the denomination for the year 2008 with the reverse of football be 1 yuan
the iii series include fencing and football
iii series have 2 a football design , and a brass alloy
in 2007 the reverse be weightlift and swim
the alloy be brass for 2007 and 2008
i series be the reverse be football
silver be the alloy for all ii series
year
denomination
alloy
reverse
diameter
2007
1 yuan
brass
weightlifting
25 mm
2007
1 yuan
brass
swimming
25 mm
2008
1 yuan
brass
archery
25 mm
2008
1 yuan
brass
gymnastics
25 mm
2008
1 yuan
brass
table tennis
25 mm
2008
1 yuan
brass
fencing
25 mm
2008
1 yuan
brass
football
25 mm
year
weight
obverse
mintage
series
2007
6.75 gr
emblem of the xxix olympiad , and the year 2008
10000000
i series
2007
6.75 gr
emblem of the xxix olympiad , and the year 2008
10000000
i series
2008
6.75 gr
emblem of the xxix olympiad , and the year 2008
10000000
ii series
2008
6.75 gr
emblem of the xxix olympiad , and the year 2008
10000000
ii series
2008
6.75 gr
emblem of the xxix olympiad , and the year 2008
10000000
ii series
2008
6.75 gr
emblem of the xxix olympiad , and the year 2008
10000000
iii series
2008
6.75 gr
emblem of the xxix olympiad , and the year 2008
10000000
iii series