20 Cents Kwangtung Province

Hello everyone,
 

During my holiday in Taiwan, I enjoyed browsing around small shops in the hope of discovering something interesting.
I found two coin collections that I would like to have checked to see if they are genuine or not.
The collection also includes 15 pieces of 2 Jiao / 20 Cents Kwangtung Province N#22630.
I measured them all and they weigh between 5.09g and 5.29g, with a diameter of 24mm and a thickness of 1.5mm, which corresponds to the coin specifications.
How can I conclusively verify whether they are genuine? What do you think?

Thanks you very mutch

freundliche Grüsse

Kevin 

Please add the link to the coin page

N#22630

Design details are similar even though the edge is more crenellated than beaded on obverse. Due to the huge mintage on year-8, several dies were used.

Density of AG50% is 9.7 and Cu.Ni is 8.9 so very close, but a Cu.Ni. coin would weight : 4.9g, significantly less than your coin. In order to get the same weight as the genuine silver coin, the Cu.Ni. coin would have a thickness of 1.63 mm instead of 1.5 mm.

You might make a precise density test.

Hello Thank you very mutch for the answer.

I will make make a precise density test in the next days.