Should be something easy to find, but I'm having difficulties to identify this possible coin on the catalog.
I'm not familiar with Chinese language, but my amateur research give me some infos, the portrait is from Yat-Sen, and the symbol 伍 means 5, so I guess could be 5 Yuan?
The most similar coin I have found is this one:
https://en.numista.com/catalogue/pieces16370.html
Obviously mine is larger, not silver (the magnet still stuck on it), 44mm, reeded edge, medal alignment, no weight available since I do not have a scale.
Can anyone gimme some directions?
Thank you for any light.

