Seems strange to me that the coin would be a millimeter too small in diameter and a gram too heavy, please tell us if you’re using a ruler and a kitchen scale or proffesional tools. (caliper, scale that goes to a hundredth of a gram)
Otherwise, the coin looks ok to me at first glance. Though with a very small mintage of only 100000 you have to be very careful of chinese copies.
Where did you get the coin? It makes a pretty big difference if you got it at a flea market or a coin shop.
Hi, as no one has actually answered your question. And when you say evaluation, I am assuming you mean value or evaluation of the grade, if it is real (I am not commenting, this coin is commonly faked), it is around the XF grade.
As a starting point, and this varies between countries, depending on the market, here is the NGC price guide;
I bought a handful of supposedly silver crowns of Italian coins, in Italy ("rarities", I was a bit drunk at the time). I found a dealer in Florence and had him take a look. He did a ring test on his glass case and the sound was a thud compared to the real ping of silver. They've been faking these there way before the Chinese perfected the practice. Authentic ones were beautifully struck with great surfaces, yours seems dull and a bit flat. Do magnets, or take it to a dealer for a ring test.
