
Dear all,
Greetings
I am so excited to get hold of this coin. Need help to confirm authenticity as there are known replicates. Weight is 25.07g. Ping test Frequency 4414Hz/4521Hz and 10357Hz.
The Obverse (at time of photographing, it is under yellow light)

The Reverse

Some website stated 0.835 Ag finest, some stated 0.90 At finest. Which is right?
Cheers and best regards!