How much can a 32-year-old half-coin of the Republic of China sell?

According to online search, the price of Sun Yat-sen nickel coins (semicircles) collected by buyers in 32 years of the Republic of China was 800,000. This kind of coin is rare in the world and has high collection value.

In the thirty-second year of the Republic of China, it was a semi-circular coin with a diameter of 2.3cm and a weight of 8.4g g. The coin pattern was beautifully designed and the font was delicate. The front pattern is modeled after the profile of Dr. Sun Yat-sen in Chuanyang, and the back is the traditional China ancient coin pattern. The front and back are carved back along the edge.