Coinsandcanada.com

can there errors be faked?

Yes... Clipped planchet can be fake, but it's very easy to detect.

There's few signatures to take a look to confirm it's genuine.

The dovetail signature
Weak strike on beads
Blakesley effect
Cut-and-tear texture” on the exposed edge of the clip

You will find more information here:

https://www.coinsandcanada.com/coins-er ... chet&id=26

You can post your coin if you have a doubt with your diagnostic.

Yes, they can be easily faked. See them fairly often on eBay.
Follow the instructions listed in the above post to help you
determining if it is genuine or not.

thank you