Each euro country mints their own coins with different insignia, so people are used to 2 euro coins that what whatever figurehead.
The 1 and 2 euro coins are dual metal though, making the counterfeiting much less lucrative. The Finnish 10 mark coins also used to be dual metal; so I think was the French 10 franc coin; I don't recall if others had much security against counterfeiting.
"they are lovely looking coins, bearing an uncanny resemblance to the British One Pound coin [...] All of the One Lilangeni coin attributes are exactly the same as the British One Pound coin."
[1] https://en.numista.com/catalogue/pieces29731.html
[2] https://www.alibaba.com/product-detail/One-Lilangeni-Coin-19...
Obviously it's a bit different here, as the values are roughly the same, but I can see how that would happen as an honest mistake.
Helps that each of our coins are almost exactly the same size and weight for all common denominations.
Mostly we paid with cards, but my wife brought a few US$100 bills. It was silly to try to spend them for small purchases, but one night we had a CAD$60 dinner and we asked if we could use USD (hadn't been a problem anywhere else). They said yes, BUT they'd only accept it at 1:1. Obviously that's their prerogative, but it seemed silly to expect us to eat $18 or thereabouts, so instead they ate the credit card transaction fees. shrug
Granted, this is probably not bad policy in general because they're going to be even less expert at spotting fake US currency than US-based merchants are.
I'm in a city now and I've had people refuse to accept 2 dollar bills (which are rare, though absolutely legal tender).
You can buy it here: http://www.moneypads.com/products.html