How to identify the Republic of China twenty-three years commemorative coins

The Republic of China twenty years commemorative coins will produce a uniform new oxidized layer of the surface of the coin will not appear black spots so cleaned year-on-year it is best to naturally claim that the oxidized layer of the ancient color has given people the feeling of the ages Identifying the Republic of China twenty-three years commemorative coins is mainly to see whether the contours are clear Generally the obverse side of the printing of Dr. Sun Yat-sen's portrait printed in the back of the sailboat on the face of the coins written on the three-dimensional sense of the Republic of China above the face of the coins written on the face of the Republic of China. The 23rd year commemorative coins are usually white bronze and copper coins are yellow, and the face value of the two types of coins are different The National Tongbao Cup Square Dance Competition The preliminary round is over Come and pay attention to the