Table:
text: Summer Olympic Coins (2000–present)
1 Yuan
1 Yuan
Year_ Denomination Alloy Reverse Diameter Weight Obverse Mintage Series
2007 1 Yuan Brass Weightlifting 25mm 6.75 gr Emblem of the XXIX Olympiad, and the year 2008. 10000000 I series
2007 1 Yuan Brass Swimming 25mm 6.75 gr Emblem of the XXIX Olympiad, and the year 2008. 10000000 I series
2008 1 Yuan Brass Archery 25mm 6.75 gr Emblem of the XXIX Olympiad, and the year 2008. 10000000 II series
2008 1 Yuan Brass Gymnastics 25mm 6.75 gr Emblem of the XXIX Olympiad, and the year 2008. 10000000 II series

Question: What is the obverse of the archery coin in Summer Olympic Coins (2000–present) under 1 yuan?

Question: What is the diameter of the Archery reverse coin among Summer Olympics coins (2000–present) 1 yuan?