Mexican coin

What's the coin here (yellow)?
The white coin is km486.






I am interested in a yellow coin.
It is the same as km486 but yellow.

More information such as weight would be helpful but it simply looks like post mint colorization of the same coin type.

I agree. In the first picture look at the edge dings at the bottom of the top coin. I see spots where the plating has been broken off.

When posting images of known coins please include a link to the Numista page for the coin. Here is the link for this coin:

https://en.numista.com/catalogue/pieces987.html