France [Kingdom] 1786?

The design looks like some of the catalog coins for France [Kingdom], but it doesn't match the weight. Is there something between a Sol and a Half Sol, or can this much wear result in a loss of almost 3 grams?
weight: 9.1 grams, diameter: 29.5 mm
looks like copper / date appears to be 1786 / may say "VI" (Louis XVI?) next to the profile

Thank you!

It does look like this one.
https://en.numista.com/catalogue/pieces5466.html

They do look very similar, but the weights are different. How much variance is acceptable? How much can reasonably be attributed to wear?
Thanks

Depending on the mint, there is a dot or not between REX and the date.

re: "Depending on the mint, there is a dot or not between REX and the date."
Yes, there is a dot between REX and the date. What does that mean in regards to identifying the coin?
Thanks

Asked the French forum, seems normal for that period.

Cita: "Pott"​Yes, there is a dot between REX and the date. What does that mean in regards to identifying the coin?
​Thanks

​On your coin the mint is unreadable, but on the link I attached, there are several mints with or without dot.
The character after the date might change too ?