>>60889078
>is there any anti counterfeit features (better and easier than PMs/fiat)?
PM coins are exceptionally hard to counterfeit in a way that will pass the specific gravity and ping tests, which gives you 99,999% accuracy for gold.

Anything as dense as gold has to be tungsten which fails the ping test or the "snip" test (picrel) Any other metal as dense as gold is more expensive, and few metals match gold's color.

Silver density CAN be spoofed, but it's not easy, but it will still fail the ping and magnetic slide tests. It's much less common for superfake silver coins. The counterfeit are usually brass or some other alloy plated.

Additionally, modern coins have anticounterfeiting features like the current Maples with the very fine engraving and the MapleDNA.

Silver and gold BARS on the other hand are much more risky for people who don't have experience. Be very careful about accepting a bar from an untrusted source.