Chinese 50 centa yunan, fake? [gelöst]

Hi!

ive had this pair for a few years. Bought from and old lady here in brazil, who allegedly found them in her husbands safe along with other silver (authentic) coins. I know this means nothing, but just painting the picture haha.

What do you think?

first coin, 13.08g and 33mm



second coin, 13.59g and 33mm

Not an expert by any means, but I'm not terribly suspicious of these. The measurements are about right and the wear seems natural. Plus, a counterfeit in this condition wouldn't be nearly as lucrative as some others. I'd hold onto them, but I'm curious too see what others think.

genuine coin, common type
https://en.numista.com/catalogue/pieces90660.html

Genuine. The strikes looks good. And colour (patina) of the coin is fine.

I only ever buy Chinese coins with a COA signed by chairman mao himself.