How to spot a fake Rijksdaalder?

[jkv20000]

I’ve seen this rijksdaalder online, it’s a good year but something feels off about it to me.

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I don’t know if it’s the colour or the detail or something?
Is it real? I’m not so good with the willem coins.

In general what should you look for when trying to identify fake 2 1/2 gulden? I know 25g and 38mm etc but you can’t judge that without the coin in hand.

Is there anywhere with known rijksdaalder fakes that I can look at to see what details might be wrong?

Many thanks
Jacob